void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(1, OUTPUT);
  pinMode(2, OUTPUT);
   pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
   pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(1, HIGH); 
  delay(1000);
  digitalWrite(1, HIGH); // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  digitalWrite(2, HIGH); 
  delay(1000); 
    digitalWrite(2, HIGH);  
    
    digitalWrite(3, HIGH); 
  delay(1000);
  digitalWrite(3, HIGH); // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  digitalWrite(4, HIGH); 
  delay(1000); 
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH); 
  delay(1000);
  digitalWrite(5, HIGH); // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  digitalWrite(6, HIGH); 
  delay(1000); 
    digitalWrite(6, HIGH); 
   // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  digitalWrite(7, HIGH); 
  delay(1000); 
    digitalWrite(7, HIGH);  
    
    digitalWrite(8, HIGH); 
  delay(1000);
  digitalWrite(8, HIGH); // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  digitalWrite(9, HIGH); 
  delay(1000); 
    digitalWrite(9, HIGH);
    digitalWrite(10, HIGH); 
  delay(1000);
  digitalWrite(10, HIGH);
  
  digitalWrite(1, LOW);
  digitalWrite(2, LOW);
  digitalWrite(3, LOW);
  digitalWrite(4, LOW);
  digitalWrite(5, LOW);
  digitalWrite(6, LOW);
  digitalWrite(7, LOW);
  digitalWrite(8, LOW);
  digitalWrite(9, LOW);
  digitalWrite(10, LOW);
  // turn the LED on (HIGH is the voltage level)
                      // wait for a second
  // turn the LED off by making the voltage LOW
 // turn the LED off by making the voltage LOW
   
  
    // turn the LED on (HIGH is the voltage level)
}