b-u bbb bbc bbe bbg bbk bbn bbu bcb bcc bce bcg bck bcn bcu bcz be- beb bec bee beg bek ben beu bez bgb bgc bge bgg bgk bgn bgu bgz bkb bkc bke bkg bkk bkn bnb bnc bne bng bnk bnn bnu bnz bub buc bue bug buk bun buu buz bze bzn bzu bzz c-- cbb cbc cbe cbg cbk cbn cbu cbz ccb ccc cce ccg cck ccn ccu ccz ce- ceb cec cee ceg cek cen ceu cez cgb cgc cge cgg cgn cgu ckb ckc cn- cnb cnc cne cng cnn cnu cub cuc cue cug cuk cun cuu cuz cz- czc cze czk ebb ebc ebe ebg ebk ebn ebu ec- ecb ecc ece ecg eck ecn ecu eeb eec eee eeg eek een egb egc ege egg egn egu ekb ekc eke ekg eku en- enb enc ene eng enk enn enu enz eu- eub euc eue eug eun eze ezz gbc gbe gbg gbk gbn gbu gbz gcb gcc gce gcg gck gcn gcu ge- geb gec gee geg gek gen geu gez ggb ggc ggg ggn ggu ggz gkb gkn gnb gnc gne gnn gnu gu- gub guc gue gug guk gun guu guz gzu k-z kbb kbc kbe kbk kbn kbu kbz kcb kcc kce kcg kck kcn kcu ke- keb kec kee keg kek ken kez kgb kgc kgu kkb kkc kke kkk kkn kku kn- knc kne kng knk knn knu kub kuc kue kug kuk kun kuu nbb nbc nbe nbg nbk nbn nbu ncb ncc nce ncg nck ncn ncu ne- neb nec nee neg nek nen neu nez ngb ngc nge ngg ngk ngn ngu nkc nke nkk nkn nku nnb nnc nne nng nnk nnn nnu nnz nub nuc nue nug nuk nun nuu nzb nze nzg nzz ubb ubc ube ubg ubk ubn ubu ucb ucc uce ucg uck ucn ucu ueb uec uee ueg uen ugb ugc uge ugg ugk ugn ugu ukb ukc uke ukk ukn uku ukz un- unb unc une ung unk unn unu uuc uue uug uun uuu uzb uzu z-g zbb zbc zce zeb zec zee zek zen zez zgb zgg znc zne znn zub zuc zug zuk zun zuz zzz