mu 1 2 3 mu 3 2 4 mu 3 4 5 mu 3 5 6 mu 6 5 8 mu 3 8 9 mu 9 9 8 mu 8 8 2 pwr 6 5 6 iv 6 7 mu 7 2 8 mu 8 6 2 pwr 7 4 5 iv 5 6 mu 6 1 7 mu 7 5 1