mchem[10], mamce[8],
cham[8], mach[8], mech[8], echa[7], heca[7], mace[6],
mhm[7], ach[6], cha[6], che[6], ech[6], hec[6], hem[6], mac[5], mam[5], mem[5],
hm[5], ha[4], eh[4], he[4], ce[3], ma[3], em[3], me[3],
