agat[7], taga[7], toga[7], togo[7], taca[6], taco[6],
tag[6], tog[6], aga[5], ago[5], tac[5], ata[4], tao[4], oto[4],
ag[4], go[4], co[3], at[3], ta[3], ot[3], to[3], aa[2],
