penup
turn 180
forward 400
turn 90
forward 400
turn 90
pendown
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown
thickness 3
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown
thickness 5
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
forward 50
turn 90
penup
forward 50
pendown