bigo[8], bogi[8], bios[6], bosi[6], cios[5],
big[7], gib[7], cob[6], boi[5], obi[5], goi[5], ogi[5], bis[5], gis[5], cis[4], sic[4], soc[4], osi[3], sio[3], soi[3],
bi[4], bo[4], go[4], ci[3], co[3], si[2], os[2],
