b-u bbb bbh bbi bbk bbr bbu bhb bhh bhi bhk bhr bhu bi- bib bih bii bik bir biu bkb bkk bkr brb brh bri brk brr bru bub buh bui buk bur buu h-i hbb hbh hbi hbk hbr hbu hhb hhh hhi hhk hhr hhu hib hih hii hik hir hiu hkb hkh hki hkk hkr hku hr- hrb hrh hri hrk hrr hru hub huh hui huk hur huu ibb ibh ibi ibk ibr ibu ihb ihh ihi ihk ihr ihu iib iih iii iir iiu ikb iki ikk ikr iku ir- irb iri irk irr iru iu- iub iui iur kbb kbh kbi kbk kbr kbu khh khi khk khr khu kib kih kii kik kir kiu kkb kkh kki kkk kkr kku kri krk krr kru kub kuh kui kuk kur kuu rbb rbh rbi rbk rbr rbu rh- rhb rhh rhi rhr rhu rib rih rii rik rir rkb rkk rku rrb rrh rri rrk rrr rru rub ruh rui ruk rur ruu ubb ubh ubi ubk ubr ubu uhb uhh uhi uhr uhu uib uii uir uiu ukb uki ukk ukr uku ur- urb uri urk urr uru uur uuu