-ic b-u bbb bbc bbg bbi bbk bbs bbu bcb bcc bcg bci bck bcs bcu bgb bgc bgg bgi bgk bgs bgu bi- bib bic big bii bik bis biu bkb bkc bkg bkk bks bsb bsc bsg bsi bsk bss bsu bub buc bug bui buk bus buu c-- cbb cbc cbg cbi cbk cbs cbu ccb ccc ccg cci cck ccs ccu cgb cgc cgg cgi cgs cgu ci- cib cic cig cii cik cis ciu ckb ckc cki cks csb csc csg csi csk css csu cub cuc cug cui cuk cus cuu gbc gbg gbi gbk gbs gbu gcb gcc gcg gci gck gcs gcu ggb ggc ggg ggi ggs ggu gib gic gig gii gik gis giu gkb gks gsb gsc gsg gsi gsk gss gsu gu- gub guc gug gui guk gus guu ibb ibc ibg ibi ibk ibs ibu icb icc icg ici ick ics icu igb igc igg igi igk igs igu iib iic iii iis iiu ikb ikc iki ikk iks iku is- isb isc isg isi isk iss isu iu- iub iuc iug iui ius kbb kbc kbi kbk kbs kbu kcb kcc kcg kci kck kcs kcu kgb kgc kgi kgs kgu kib kic kig kii kik kis kiu kkb kkc kki kkk kks kku ksb ksc ksg ksi ksk kss ksu kub kuc kug kui kuk kus kuu sbb sbc sbg sbi sbk sbs sbu scb scc scg sci sck scs scu sgb sgc sgg sgi sgk sgs sgu sib sic sig sii sik sis siu sk- skb skc skg ski skk sks sku ss- ssb ssc ssg ssi ssk sss ssu sub suc sug sui suk sus suu ubb ubc ubg ubi ubk ubs ubu ucb ucc ucg uci uck ucs ucu ugb ugc ugg ugi ugk ugs ugu uib uic uig uii uis uiu ukb ukc uki ukk uku usb usc usg usi usk uss usu uuc uug uus uuu