forward(300)left(90)forward(300)right(90)pen(1)

repeat(15) {
  repeat(15) {
    repeat(4) {
      forward(30)
      right(90)
      if (-4) { right(90) }
    }
    if ( 1 ) {
      pen(0)
      right(90)
      forward(40)
      left(90)
      pen(1)
    }
  }
  if (0) {
    forward(35)
  }
  pen(0)
  forward(-40)
  if (42) {
    left(90)
    forward(600)
    right(90)
  }
  pen(1)
}