A turn through 90º clockwise: Yellow 
A turn of 45º clockwise: Blue 
A turn of 1½ right angles clockwise, then a right angle anticlockwise: Yellow 
A turn of 135º clockwise: Purple 

45º clockwise, then 180º: Blue 
A turn of 225º clockwise: Purple 
A turn of half a right angle anticlockwise: Blue 
A turn of 0º: Red 
A turn of 2 right angles clockwise, then ½ a right angle anticlockwise: White 
A full turn: Green 
A turn through 90º anticlockwise: Blue 
A turn of 180º: Green 
