boga[8], baco[7], coba[7], obca[7], bota[7], toga[7], taco[6],
cab[6], cob[6], bat[6], tab[6], tag[6], bot[6], tog[6], abo[5], boa[5], oba[5], ago[5], tac[5], tao[4],
ba[4], ag[4], bo[4], go[4], co[3], at[3], ta[3], ot[3], to[3],
