{
  DO A FROM 10 TO 22 {
    FD A
    RT 10
    DO B FROM 1 TO 5 {
      SET D := B 3.15 * 2 / ;
      FD B
      LT D
      SET E := B 1 + ;
      DO C FROM 1 TO E {
         FD C
         RT 10
         FD C
         RT 10
      }
    }
  }
}