bug[9], gub[9], hub[9], buc[8], cug[8], chu[8], uch[8], big[7], gib[7], ghi[7], chi[6], ich[6], wig[5], hiw[5], wic[4],
bu[6], gu[6], hu[6], bi[4], hi[4], wu[4], ci[3], iw[2],