cong[7], gont[7], tong[7], togo[7], nogo[6], ogon[6], toto[6], noto[5], tono[5],
tog[6], gon[5], noc[4], not[4], ton[4], oto[4], ono[3],
go[4], co[3], ot[3], to[3], no[2], on[2],
