mu 1 2 3 mu 3 2 4 mu 3 4 5 mu 3 5 6 mu 6 5 8 pwr 5 8 2 mu 5 5 6 iv 6 7 mu 7 1 8 mu 8 6 1 pwr 4 3 4 iv 4 5 mu 5 2 6 mu 6 4 2