b-u bbb bbc bbe bbm bbn bbo bbt bbu bcb bcc bce bcm bcn bco bct bcu be- beb bec bee bem ben beo bet beu bmb bmc bme bmm bmn bmo bmt bmu bnb bnc bne bnn bno bnt bnu bob boc boe bom bon boo bot bou btb btc bte btm btn bto btt btu bub buc bue bum bun buo but buu c-- cbb cbc cbe cbm cbn cbo cbt cbu ccb ccc cce ccm ccn cco cct ccu ce- ceb cec cee cem cen ceo cet ceu cmb cmc cme cmm cmn cmo cmt cmu cn- cnb cnc cne cnm cnn cno cnt cnu co- cob coc coe com con coo cot cou ctb ctc cte ctm ctn cto ctt ctu cub cuc cue cum cun cuo cut cuu ebb ebc ebe ebm ebn ebo ebt ebu ec- ecb ecc ece ecm ecn eco ect ecu eeb eec eee eem een eeo eet em- emb emc eme emm emn emo emt emu en- enb enc ene enm enn eno ent enu eo- eob eoc eoe eom eon eoo eot eou etb etc ete etm etn eto ett etu eu- eub euc eue eun eut m-o mbb mbc mbe mbm mbo mbt mbu mc- mcb mcc mce mcm mcn mco mct mcu meb mec mee mem men meo met meu mmb mmc mme mmm mmn mmo mmt mmu mnb mnc mne mnm mnn mno mnt mnu mob moc moe mom mon moo mot mou mtb mtc mte mtm mtn mto mtt mtu mub muc mue mum mun mut muu nbb nbc nbe nbm nbn nbo nbt nbu ncb ncc nce ncm ncn nco nct ncu ne- neb nec nee nem nen neo net neu nmb nmc nme nmm nmn nmo nmt nmu nnb nnc nne nnm nnn nno nnt nnu no- nob noc noe nom non noo not nou ntb ntc nte ntm ntn nto ntt ntu nub nuc nue num nun nuo nut nuu ob- obb obc obe obm obn obo obt obu oc- ocb occ ocm ocn oco oct ocu oeb oec oee oem oen oeo oet om- omb omc ome omm omn omo omt omu on- onb onc one onn ono ont onu oo- oob ooc oom oon ooo oot ot- otb otc ote otm otn oto ott otu ou- ouc oue oum oun ouo out tbb tbc tbe tbm tbn tbo tbt tbu tcb tcc tce tcm tcn tco tct tcu te- teb tec tee tem ten teo tet teu tmb tmc tme tmm tmn tmo tmt tmu tnb tnc tne tnm tnn tno tnt to- tob toc toe tom ton too tot tou ttb ttc tte ttm ttn tto ttt ttu tub tuc tue tum tun tuo tut tuu ubb ubc ube ubn ubo ubt ubu ucb ucc uce ucm ucn uco uct ucu ueb uec uee uem uen uet um- umb umc ume umm umn umo umt umu un- unb unc une unm unn uno unt unu uob uoc uoe uom uon uoo uot utb utc ute utm utn uto utt utu uuc uue uum uun uut uuu