Check Board Pattern

/**
 * Welcome to the Stanford Karel IDE.
 * This is a free space for you to
 * write any Karel program you want.
 * Address: http://stanford.edu/~cpiech/karel/ide.html
 **/
function main(){
   //your code here
   checkBoardPattern();
   checkBoardPattern();
   putBeeper();
   turningLeft();
   checkBoardPatternForEven();
   checkBoardPatternForEven();
   turningRight();
   checkBoardPattern();
   checkBoardPattern();
   putBeeper();
   turningLeft();
   checkBoardPatternForEven();
   checkBoardPatternForEven();
   turningRight();
   checkBoardPattern();
   checkBoardPattern();
   putBeeper();
}
function checkBoardPattern() {
   putBeeper();
   move();
   move();
}
function checkBoardPatternForEven() {
   move();
   putBeeper();
   move();
}
function turningLeft() {
   turnLeft();
   move();
   turnLeft();
}
function turningRight() {
   turnRight();
   move();
   turnRight();
}