#define ledRed 2
#define ledBlue 7
#define ledGreen 4

void setup() {
  // put your setup code hare, to run once;
pinMode(ledRed, OUTPUT);
pinMode(ledBlue, OUTPUT);
pinMode(ledGreen, OUTPUT );
}

void loop() {
  // put your main code here, to run repeatedly:
 digitalWrite(ledRed, HIGH);
 delay(1000);
 digitalWrite(ledRed, LOW);
 delay(1000);
 digitalWrite(ledBlue, HIGH);
 delay(1000);
 digitalWrite(ledBlue, LOW);
 delay(1000);
 digitalWrite(ledGreen, HIGH);
 delay(1000);
 digitalWrite(ledGreen, LOW);
 delay(1000);
}