M M10 W W10 X Open Difficult X Open Easy M M12 W W12 M M14 W W14 M M16 W W16 M M20 W W20 M M21E W W21E M M35 W W35 M M40 W W40 M M45 W W45 M M50 W W50 M M55 W W55 M M60 W W60 M M65 W W65 M M70 W W70 M M75