void setup() 
{
  
    pinMode(2, OUTPUT);   //in1
    pinMode(3, OUTPUT);   //in 2
    pinMode(5, OUTPUT);   //in3
    pinMode(6, OUTPUT);   //in 4

   
}

void loop()
 {
  //forward
   digitalWrite(2, HIGH);
   digitalWrite(3, LOW);
     digitalWrite(5, HIGH);
   digitalWrite(6, LOW);
   delay(5000);

//backward
   digitalWrite(2, LOW);
   digitalWrite(3, HIGH);
   digitalWrite(5, LOW);
   digitalWrite(6, HIGH);
   delay(5000);

//left
  digitalWrite(2, HIGH);
   digitalWrite(3, LOW);
     digitalWrite(5, LOW);
   digitalWrite(6, HIGH);
   delay(5000);
//right
     digitalWrite(2, LOW);
   digitalWrite(3, HIGH);
     digitalWrite(5, HIGH);
   digitalWrite(6, LOW);
   delay(5000);

   //stop
  digitalWrite(2, LOW);
   digitalWrite(3, LOW);
  digitalWrite(5, LOW);
   digitalWrite(6, LOW);
   delay(5000);


}