mamba[9], ambem[9], ameba[8], mamea[7],
mamb[8], amba[7], ameb[7], mama[6], weba[6], mewa[5],
amb[6], bam[6], mam[5], mem[5], baw[5], wab[5], web[5], maa[4], wam[4], mew[4], ewa[3],
ba[4], be[4], ma[3], em[3], me[3], aa[2], ew[2], we[2],
