-ic b-u bbb bbc bbh bbi bbk bbr bbs bbu bcb bcc bch bci bck bcr bcs bcu bhb bhc bhh bhi bhk bhr bhs bhu bi- bib bic bih bii bik bir bis biu bkb bkc bkk bkr bks brb brh bri brk brr brs bru bsb bsc bsh bsi bsk bsr bss bsu bub buc buh bui buk bur bus buu c-- cbb cbc cbh cbi cbk cbr cbs cbu ccb ccc cch cci cck ccr ccs ccu ch- chb chc chh chi chk chr chs chu ci- cib cic cih cii cik cir cis ciu ckb ckc ckh cki cks crb crc crh cri crk crr crs cru csb csc csh csi csk csr css csu cub cuc cuh cui cuk cur cus cuu h-i hbb hbc hbh hbi hbk hbr hbs hbu hcb hcc hch hci hck hcr hcs hhb hhc hhh hhi hhk hhr hhs hhu hib hic hih hii hik hir his hiu hkb hkh hki hkk hkr hks hku hr- hrb hrc hrh hri hrk hrr hrs hru hsb hsc hsh hsi hsk hsr hss hsu hub huc huh hui huk hur hus huu ibb ibc ibh ibi ibk ibr ibs ibu icb icc ich ici ick icr ics icu ihb ihc ihh ihi ihk ihr ihs ihu iib iic iih iii iir iis iiu ikb ikc iki ikk ikr iks iku ir- irb irc iri irk irr irs iru is- isb isc ish isi isk isr iss isu iu- iub iuc iui iur ius kbb kbc kbh kbi kbk kbr kbs kbu kcb kcc kch kci kck kcr kcs kcu khh khi khk khr khs khu kib kic kih kii kik kir kis kiu kkb kkc kkh kki kkk kkr kks kku krc kri krk krr krs kru ksb ksc ksh ksi ksk ksr kss ksu kub kuc kuh kui kuk kur kus kuu rbb rbc rbh rbi rbk rbr rbs rbu rcb rcc rch rci rcr rcs rcu rh- rhb rhc rhh rhi rhr rhs rhu rib ric rih rii rik rir ris rkb rkc rkk rks rku rrb rrc rrh rri rrk rrr rrs rru rsb rsc rsh rsi rsk rsr rss rsu rub ruc ruh rui ruk rur rus ruu sbb sbc sbh sbi sbk sbr sbs sbu scb scc sch sci sck scr scs scu sh- shb shc shh shi shk shr shs shu sib sic sih sii sik sir sis siu sk- skb skc skh ski skk skr sks sku sr- srb src srh sri srk srr srs ss- ssb ssc ssh ssi ssk ssr sss ssu sub suc suh sui suk sur sus suu ubb ubc ubh ubi ubk ubr ubs ubu ucb ucc uch uci uck ucr ucs ucu uhb uhc uhh uhi uhr uhs uhu uib uic uii uir uis uiu ukb ukc uki ukk ukr uku ur- urb urc uri urk urr urs uru usb usc ush usi usk usr uss usu uuc uur uus uuu