b-u bbb bbc bbe bbk bbm bbt bbu bcb bcc bce bck bcm bct bcu be- beb bec bee bek bem bet beu bkb bkc bke bkk bkm bkt bmb bmc bme bmk bmm bmt bmu btb btc bte btk btm btt btu bub buc bue buk bum but buu c-- cbb cbc cbe cbk cbm cbt cbu ccb ccc cce cck ccm cct ccu ce- ceb cec cee cek cem cet ceu ckb ckc ckm ckt cmb cmc cme cmk cmm cmt cmu ctb ctc cte ctk ctm ctt ctu cub cuc cue cuk cum cut cuu ebb ebc ebe ebk ebm ebt ebu ec- ecb ecc ece eck ecm ect ecu eeb eec eee eek eem eet ekb ekc eke ekt eku em- emb emc eme emk emm emt emu etb etc ete etk etm ett etu eu- eub euc eue eut k-t kbb kbc kbe kbk kbm kbu kcb kcc kce kck kcm kct kcu ke- keb kec kee kek kem ket kkb kkc kke kkk kkm kkt kku kmb kmc kme kmk kmm kmt kmu ktb ktc kte ktk ktm ktt ktu kub kuc kue kuk kum kut kuu mbb mbc mbe mbk mbm mbt mbu mc- mcb mcc mce mck mcm mct mcu meb mec mee mek mem met meu mkb mkc mke mkk mkm mkt mku mmb mmc mme mmk mmm mmt mmu mtb mtc mte mtk mtm mtt mtu mub muc mue muk mum mut muu tbb tbc tbe tbk tbm tbt tbu tcb tcc tce tck tcm tct tcu te- teb tec tee tek tem tet teu tkb tkc tke tkk tkm tkt tmb tmc tme tmk tmm tmt tmu ttb ttc tte ttk ttm ttt ttu tub tuc tue tuk tum tut tuu ubb ubc ube ubk ubt ubu ucb ucc uce uck ucm uct ucu ueb uec uee uem uet ukb ukc uke ukk uku um- umb umc ume umm umt umu utb utc ute utk utm utt utu uuc uue uum uut uuu