mu 1 2 3 mu 3 2 4 mu 3 4 5 mu 3 5 6 mu 6 3 7 mu 7 4 8 mu 3 8 9 pwr 11 8 6 iv 6 7 mu 7 1 8 mu 8 6 1 pwr 23 9 8 iv 8 7 mu 7 5 4 mu 4 8 2