## First wave
# one step forward, turn left, 
# one forward: up the wave
move()
turn_left()
move()

# on top of the wave:
# turn right, one forward, 
# turn right
turn_left()
turn_left()
turn_left()
move()
turn_left()
turn_left()
turn_left()

# and down again
move()
turn_left()
move()

## Second wave
# up the wave

turn_left()

move()



# on top of the wave

turn_left()

turn_left()

turn_left()

move()

turn_left()

turn_left()

turn_left()



# and down again

move()

turn_left()

move()

turn_off()