b-u bbb bbc bbe bbf bbk bbl bbm bbu bcb bcc bce bcf bck bcl bcm bcu be- beb bec bee bef bek bel bem beu bfb bfc bfe bff bfl bfm bfu bkb bkc bke bkf bkk bkl bkm blb blc ble blf blk bll blm blu bmb bmc bme bmf bmk bml bmm bmu bub buc bue buf buk bul bum buu c-- cbb cbc cbe cbf cbk cbl cbm cbu ccb ccc cce ccf cck ccl ccm ccu ce- ceb cec cee cef cek cel cem ceu cfb cfc cfe cff cfk cfl cfm cfu ckb ckc ckm cl- clb clc cle clf clk cll clm clu cmb cmc cme cmf cmk cml cmm cmu cub cuc cue cuf cuk cul cum cuu ebb ebc ebe ebf ebk ebl ebm ebu ec- ecb ecc ece ecf eck ecl ecm ecu eeb eec eee eef eek eel eem ef- efb efc efe eff efl efm ekb ekc eke ekf ekl eku elb elc ele elf elk ell elm elu em- emb emc eme emf emk eml emm emu eu- eub euc eue euf eul fbb fbc fbe fbf fbk fbl fbm fbu fcb fcc fce fcf fck fcl fcm fcu feb fec fee fef fek fel fem feu ffc ffe fff ffk ffl ffm ffu fkb fkc fkf fkk fkl fkm flb flc fle flf fll flm flu fmb fmc fme fmf fml fmm fmu fub fue fuf fuk ful fum fuu kbb kbc kbe kbf kbk kbl kbm kbu kcb kcc kce kck kcl kcm kcu ke- keb kec kee kef kek kel kem kfc kff kfm kfu kkb kkc kke kkk kkl kkm kku kl- klb klc klf klm klu kmb kmc kme kmf kmk kml kmm kmu kub kuc kue kuk kul kum kuu lbb lbc lbe lbf lbk lbl lbm lbu lcb lcc lce lcf lck lcl lcm lcu leb lec lee lef lek lel lem leu lfb lfc lfe lff lfk lfl lfm lfu lkb lkl llb llc lle llf llk lll llm llu lmb lmc lme lmf lmk lml lmm lmu lub luc lue luf luk lul lum luu m-f mbb mbc mbe mbf mbk mbl mbm mbu mc- mcb mcc mce mcf mck mcl mcm mcu meb mec mee mef mek mel mem meu mfb mfc mfe mff mfl mfm mfu mkb mkc mke mkk mkl mkm mku mlb mlc mle mlf mlk mll mlm mlu mmb mmc mme mmf mmk mml mmm mmu mub muc mue muf muk mul mum muu ubb ubc ube ubf ubk ubl ubu ucb ucc uce ucf uck ucl ucm ucu ueb uec uee uef uel uem ufc ufe uff ufl ufm ufu ukb ukc uke ukf ukk ukl uku ulb ulc ule ulf ulk ull ulm ulu um- umb umc ume umf uml umm umu uuc uue uum uuu