stroke 200 0 0
thickness 3
pendown
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown
stroke 0 200 0
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown
stroke 0 0 200
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown