bid[6], bod[6], bit[6], bot[6], boi[5], obi[5], bis[5], dit[5], doi[4], ido[4], dis[4], toi[4], sit[4], sto[4], osi[3], sio[3], soi[3],
bi[4], bo[4], id[3], do[3], od[3], ot[3], to[3], ts[3], si[2], os[2],
