-ey b-u bbb bbc bbe bbk bbs bbt bbu bby bcb bcc bce bck bcs bct bcu bcy be- beb bec bee bek bes bet beu bey bkb bkc bke bkk bks bkt bsb bsc bse bsk bss bst bsu bsy btb btc bte btk bts btt btu bty bub buc bue buk bus but buu buy by- byc bye byk bys byt byu c-- cbb cbc cbe cbk cbs cbt cbu cby ccb ccc cce cck ccs cct ccu ce- ceb cec cee cek ces cet ceu cey ckb ckc cks ckt cky csb csc cse csk css cst csu csy ctb ctc cte ctk cts ctt ctu cty cub cuc cue cuk cus cut cuu cuy cyb cyc cye cyk cys cyt ebb ebc ebe ebk ebs ebt ebu eby ec- ecb ecc ece eck ecs ect ecu eeb eec eee eek ees eet eey ekb ekc eke eks ekt eku eky es- esb esc ese esk ess est esu esy etb etc ete etk ets ett etu ety eu- eub euc eue eus eut eyc eye eys eyt k-t kbb kbc kbe kbk kbs kbu kcb kcc kce kck kcs kct kcu ke- keb kec kee kek kes ket key kkb kkc kke kkk kks kkt kku kky ksb ksc kse ksk kss kst ksu ktb ktc kte ktk kts ktt ktu kub kuc kue kuk kus kut kuu kuy kyc kye kys kyt kyu sbb sbc sbe sbk sbs sbt sbu sby scb scc sce sck scs sct scu se- seb sec see sek ses set seu sey sk- skb skc ske skk sks skt sku sky ss- ssb ssc sse ssk sss sst ssu stb stc ste stk sts stt stu sty sub suc sue suk sus sut suu suy sy- syb syc sye syk sys syt syu tbb tbc tbe tbk tbs tbt tbu tcb tcc tce tck tcs tct tcu te- teb tec tee tek tes tet teu tey tkb tkc tke tkk tks tkt tky tsb tsc tse tsk tss tst tsu tsy ttb ttc tte ttk tts ttt ttu tty tub tuc tue tuk tus tut tuu tuy tyc tye tys tyt ubb ubc ube ubk ubs ubt ubu uby ucb ucc uce uck ucs uct ucu ueb uec uee ues uet uey ukb ukc uke ukk uku usb usc use usk uss ust usu utb utc ute utk uts utt utu uty uuc uue uus uut uuu uyc uys uyu ybc ybe ybs yby ycc yce ycs ycu ycy yeb yec yee yek yes yet yey ykk ysb ysc yse ysk yss yst ysu ysy ytc yte ytk yts ytt ytu yue yuk yus yut yuu yuy yyb yyc yye yys yyt yyu yyy