-er b-u bbb bbc bbe bbg bbk bbl bbm bbn bbr bbu bcb bcc bce bcg bck bcl bcm bcn bcr bcu be- beb bec bee beg bek bel bem ben ber beu bgb bgc bge bgg bgk bgl bgm bgn bgr bgu bkb bkc bke bkg bkk bkl bkm bkn bkr blb blc ble blg blk bll blm bln blr blu bmb bmc bme bmg bmk bml bmm bmn bmr bmu bnb bnc bne bng bnk bnl bnn bnr bnu brb bre brg brk brl brm brn brr bru bub buc bue bug buk bul bum bun bur buu c-- cbb cbc cbe cbg cbk cbl cbm cbn cbr cbu ccb ccc cce ccg cck ccl ccm ccn ccr ccu ce- ceb cec cee ceg cek cel cem cen cer ceu cgb cgc cge cgg cgl cgm cgn cgr cgu ckb ckc ckm cl- clb clc cle clg clk cll clm cln clr clu cmb cmc cme cmg cmk cml cmm cmn cmr cmu cn- cnb cnc cne cng cnl cnm cnn cnr cnu crb crc cre crg crk crl crm crn crr cru cub cuc cue cug cuk cul cum cun cur cuu ebb ebc ebe ebg ebk ebl ebm ebn ebr ebu ec- ecb ecc ece ecg eck ecl ecm ecn ecr ecu eeb eec eee eeg eek eel eem een eer egb egc ege egg egl egm egn egr egu ekb ekc eke ekg ekl ekr eku elb elc ele elg elk ell elm eln elr elu em- emb emc eme emg emk eml emm emn emr emu en- enb enc ene eng enk enl enm enn enr enu erb erc ere erg erk erl erm ern err eru eu- eub euc eue eug eul eun eur gbc gbe gbg gbk gbl gbm gbn gbr gbu gcb gcc gce gcg gck gcl gcm gcn gcr gcu ge- geb gec gee geg gek gel gem gen ger geu ggb ggc ggg ggm ggn ggr ggu gkb gkm gkn glb glc gle glg glk gll glm gln glr glu gmb gmc gme gmg gml gmm gmn gmr gnb gnc gne gnl gnm gnn gnr gnu grb grc gre grg grk grl grm grn grr gru gu- gub guc gue gug guk gul gum gun gur guu kbb kbc kbe kbk kbl kbm kbn kbr kbu kcb kcc kce kcg kck kcl kcm kcn kcr kcu ke- keb kec kee keg kek kel kem ken ker kgb kgc kgl kgm kgu kkb kkc kke kkk kkl kkm kkn kkr kku kl- klb klc klg klm klr klu kmb kmc kme kmg kmk kml kmm kmu kn- knc kne kng knk knl knm knn knr knu krc krg krk krl krn krr kru kub kuc kue kug kuk kul kum kun kur kuu lbb lbc lbe lbg lbk lbl lbm lbr lbu lcb lcc lce lcg lck lcl lcm lcn lcr lcu leb lec lee leg lek lel lem len ler leu lgb lgc lge lgg lgk lgl lgm lgn lgr lgu lkb lkg lkl lkr llb llc lle llg llk lll llm lln llr llu lmb lmc lme lmg lmk lml lmm lmn lmr lmu lnb lnc lne lng lnk lnl lnm lnn lnr lnu lrb lrc lrg lrk lrm lrn lrr lru lub luc lue lug luk lul lum lun lur luu m-r mbb mbc mbe mbg mbk mbl mbm mbr mbu mc- mcb mcc mce mcg mck mcl mcm mcn mcr mcu meb mec mee meg mek mel mem men mer meu mgb mgc mge mgk mgl mgm mgn mgr mgu mkb mkc mke mkg mkk mkl mkm mkn mkr mku mlb mlc mle mlg mlk mll mlm mln mlr mlu mmb mmc mme mmg mmk mml mmm mmn mmr mmu mnb mnc mne mng mnk mnl mnm mnn mnr mnu mrb mrc mre mrg mrk mrl mrm mrn mrr mru mub muc mue mug muk mul mum mun mur muu nbb nbc nbe nbg nbk nbl nbm nbn nbr nbu ncb ncc nce ncg nck ncl ncm ncn ncr ncu ne- neb nec nee neg nek nel nem nen ner neu ngb ngc nge ngg ngk ngl ngm ngn ngu nkc nke nkk nkm nkn nkr nku nlb nlc nle nlg nlk nll nlm nln nlr nlu nmb nmc nme nmg nmk nml nmm nmn nmr nmu nnb nnc nne nng nnk nnl nnm nnn nnu nrb nrc nre nrg nrk nrl nrm nrn nrr nru nub nuc nue nug nuk nul num nun nur nuu rbb rbc rbe rbg rbk rbl rbm rbn rbr rbu rcb rcc rce rcg rcl rcm rcn rcr rcu re- reb rec ree reg rek rel rem ren rer reu rgb rgc rge rgg rgk rgn rgr rkb rkc rke rkg rkk rkm rku rlc rle rlg rll rlm rln rlr rlu rmb rmc rme rmg rml rmm rmn rmr rnb rnc rng rnm rnn rnr rnu rrb rrc rrg rrk rrl rrm rrn rrr rru rub ruc rue rug ruk rum run rur ruu ubb ubc ube ubg ubk ubl ubn ubr ubu ucb ucc uce ucg uck ucl ucm ucn ucr ucu ueb uec uee ueg uel uem uen uer ugb ugc uge ugg ugk ugl ugm ugn ugr ugu ukb ukc uke ukk ukl ukn ukr uku ulb ulc ule ulg ulk ull ulm uln ulr ulu um- umb umc ume umg uml umm umn umr umu un- unb unc une ung unk unl unm unn unr unu ur- urb urc ure urg urk url urm urn urr uru uuc uue uug uum uun uur uuu

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