bigi[8], bici[7], giki[7], icki[6], kici[6], irgi[6], dirk[6],
big[7], gib[7], bid[6], gid[6], gik[6], kic[5], gir[5], igr[5], irg[5], kii[4], ikr[4], kir[4],
bi[4], ci[3], id[3], ki[3], ii[2],
