6
1m1m1m2m3m4m5m6m7m8m9m9m9m1s
2m3m4m4m4m4m5m6m7m8m9m9m9m1p
2m3m4m4m4m4m5m6m6m6m6m7m8m1z
1m2m3m4m5m6m7m8m9m1m1m9m9m5m
7m8m9m7p8p9p1s2s9s9s9s2z2z2z
2m2m3m3m4m5m5m6m6m7m7m7m8m8m