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       code 
int  led02 = 2; 
int  led03 = 3; 
int  led04 = 4; 
int  led05 = 5;
int  led06 = 6;
int  led07 = 7;
int  led08 = 8;
int  led09 = 9;
void   setup () { 
    pinMode (led02,  OUTPUT ); 
  pinMode (led03, OUTPUT ); 
  pinMode (led04, OUTPUT ); 
  pinMode (led05, OUTPUT ); 
  pinMode (led06, OUTPUT ); 
  pinMode (led07, OUTPUT ); 
  pinMode (led08, OUTPUT ); 
  pinMode (led09, OUTPUT ); 
} 
void   loop () { 
  digitalWrite (led02,  HIGH ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
   digitalWrite (led07,  LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02,  HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
   delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, HIGH ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, HIGH ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, HIGH ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, HIGH ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, HIGH ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, HIGH ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, HIGH ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, HIGH ); 
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  digitalWrite (led02, LOW );   
  digitalWrite (led03, LOW ); 
  digitalWrite (led04, LOW ); 
  digitalWrite (led05, LOW ); 
  digitalWrite (led06, LOW ); 
  digitalWrite (led07, LOW ); 
  digitalWrite (led08, LOW ); 
  digitalWrite (led09, LOW ); 
  delay (300); 
  }