int L1 = 13 ;
int L2 = 12 ;
int L3 = 11 ;
int L4 = 10 ;
int L5 = 9 ;
int L6 = 8 ;
int L7 = 7 ;
int L8 = 6 ;
int L9 = 5 ;
int L10 = 4 ;

void setup() 
{
  
  pinMode (L1,OUTPUT);  
  pinMode (L2,OUTPUT); 
  pinMode (L3,OUTPUT); 
  pinMode (L4,OUTPUT); 
  pinMode (L5,OUTPUT); 
  pinMode (L6,OUTPUT); 
  pinMode (L7,OUTPUT); 
  pinMode (L8,OUTPUT); 
  pinMode (L9,OUTPUT); 
  pinMode (L10,OUTPUT); 

}

void loop() {
  
  digitalWrite (L1,1) ;
  delay(1000);
  digitalWrite (L1,0) ;
  digitalWrite (L2,1) ;
  delay(1000);
  digitalWrite (L2,0) ;
  digitalWrite (L3,1) ; 
  delay(1000);
  digitalWrite (L3,0) ;
  digitalWrite (L4,1) ;
  delay(1000);
  digitalWrite (L4,0) ;
  digitalWrite (L5,1) ;
  delay(1000);
  digitalWrite (L5,0) ;
  digitalWrite (L6,1) ;
  delay(1000);
  digitalWrite (L6,0) ;
  digitalWrite (L7,1) ;
  delay(1000);
  digitalWrite (L7,0) ;
  digitalWrite (L8,1) ;
  delay(1000);
  digitalWrite (L8,0) ;
  digitalWrite (L9,1) ;
  delay(1000);
  digitalWrite (L9,0) ;
  digitalWrite (L10,1) ;
  delay(1000);
  digitalWrite (L10,0) ;
  delay(1000);

  // 1 ซ้ายไปขวา


  digitalWrite (L10,1) ;
  delay(1000);
  digitalWrite (L10,0) ;
  digitalWrite (L9,1) ;
  delay(1000);
  digitalWrite (L9,0) ;
  digitalWrite (L8,1) ; 
  delay(1000);
  digitalWrite (L8,0) ;
  digitalWrite (L7,1) ;
  delay(1000);
  digitalWrite (L7,0) ;
  digitalWrite (L6,1) ;
  delay(1000);
  digitalWrite (L6,0) ;
  digitalWrite (L5,1) ;
  delay(1000);
  digitalWrite (L5,0) ;
  digitalWrite (L4,1) ;
  delay(1000);
  digitalWrite (L4,0) ;
  digitalWrite (L3,1) ;
  delay(1000);
  digitalWrite (L3,0) ;
  digitalWrite (L2,1) ;
  delay(1000);
  digitalWrite (L2,0) ;
  digitalWrite (L1,1) ;
  delay(1000);
  digitalWrite (L1,0) ;
  delay(1000);

  // 2 ขวาไปซ้าย


  digitalWrite (L5,1) ;
  digitalWrite (L6,1) ;
  delay(3000);
  digitalWrite (L5,0) ;
  digitalWrite (L6,0) ;
  delay(1000);


}