-er b-u bbb bbc bbe bbg bbk bbl bbn bbr bbt bbu bcb bcc bce bcg bck bcl bcn bcr bct bcu be- beb bec bee beg bek bel ben ber bet beu bgb bgc bge bgg bgk bgl bgn bgr bgt bgu bkb bkc bke bkg bkk bkl bkn bkr bkt blb blc ble blg blk bll bln blr blt blu bnb bnc bne bng bnk bnl bnn bnr bnt bnu brb bre brg brk brl brn brr brt bru btb btc bte btg btk btl btn btr btt btu bub buc bue bug buk bul bun bur but buu c-- cbb cbc cbe cbg cbk cbl cbn cbr cbt cbu ccb ccc cce ccg cck ccl ccn ccr cct ccu ce- ceb cec cee ceg cek cel cen cer cet ceu cgb cgc cge cgg cgl cgn cgr cgt cgu ckb ckc ckt cl- clb clc cle clg clk cll cln clr clt clu cn- cnb cnc cne cng cnl cnn cnr cnt cnu crb crc cre crg crk crl crn crr crt cru ctb ctc cte ctg ctk ctl ctn ctr ctt ctu cub cuc cue cug cuk cul cun cur cut cuu ebb ebc ebe ebg ebk ebl ebn ebr ebt ebu ec- ecb ecc ece ecg eck ecl ecn ecr ect ecu eeb eec eee eeg eek eel een eer eet egb egc ege egg egl egn egr egt egu ekb ekc eke ekg ekl ekr ekt eku elb elc ele elg elk ell eln elr elt elu en- enb enc ene eng enk enl enn enr ent enu erb erc ere erg erk erl ern err ert eru etb etc ete etg etk etl etn etr ett etu eu- eub euc eue eug eul eun eur eut gbc gbe gbg gbk gbl gbn gbr gbt gbu gcb gcc gce gcg gck gcl gcn gcr gct gcu ge- geb gec gee geg gek gel gen ger get geu ggb ggc ggg ggn ggr ggt ggu gkb gkn gkt glb glc gle glg glk gll gln glr glt glu gnb gnc gne gnl gnn gnr gnt gnu grb grc gre grg grk grl grn grr grt gru gtb gtc gte gtg gtk gtl gtn gtr gtt gtu gu- gub guc gue gug guk gul gun gur gut guu k-t kbb kbc kbe kbk kbl kbn kbr kbu kcb kcc kce kcg kck kcl kcn kcr kct kcu ke- keb kec kee keg kek kel ken ker ket kgb kgc kgl kgu kkb kkc kke kkk kkl kkn kkr kkt kku kl- klb klc klg klr klt klu kn- knc kne kng knk knl knn knr knt knu krc krg krk krl krn krr krt kru ktb ktc kte ktg ktk ktl ktn ktr ktt ktu kub kuc kue kug kuk kul kun kur kut kuu lbb lbc lbe lbg lbk lbl lbr lbt lbu lcb lcc lce lcg lck lcl lcn lcr lct lcu leb lec lee leg lek lel len ler let leu lgb lgc lge lgg lgk lgl lgn lgr lgt lgu lkb lkg lkl lkr lkt llb llc lle llg llk lll lln llr llt llu lnb lnc lne lng lnk lnl lnn lnr lnt lnu lrb lrc lrg lrk lrn lrr lrt lru ltb ltc lte ltg ltk ltl ltr ltt ltu lub luc lue lug luk lul lun lur lut luu nbb nbc nbe nbg nbk nbl nbn nbr nbt nbu ncb ncc nce ncg nck ncl ncn ncr nct ncu ne- neb nec nee neg nek nel nen ner net neu ngb ngc nge ngg ngk ngl ngn ngt ngu nkc nke nkk nkn nkr nkt nku nlb nlc nle nlg nlk nll nln nlr nlt nlu nnb nnc nne nng nnk nnl nnn nnt nnu nrb nrc nre nrg nrk nrl nrn nrr nrt nru ntb ntc nte ntg ntk ntn ntr ntt ntu nub nuc nue nug nuk nul nun nur nut nuu rbb rbc rbe rbg rbk rbl rbn rbr rbt rbu rcb rcc rce rcg rcl rcn rcr rct rcu re- reb rec ree reg rek rel ren rer ret reu rgb rgc rge rgg rgk rgn rgr rgt rkb rkc rke rkg rkk rkt rku rlc rle rlg rll rln rlr rlt rlu rnb rnc rng rnn rnr rnt rnu rrb rrc rrg rrk rrl rrn rrr rrt rru rtb rtc rte rtg rtk rtl rtn rtr rtt rtu rub ruc rue rug ruk run rur rut ruu tbb tbc tbe tbg tbk tbl tbn tbr tbt tbu tcb tcc tce tcg tck tcl tcn tcr tct tcu te- teb tec tee teg tek tel ten ter tet teu tgb tgc tge tgg tgk tgl tgn tgr tgt tgu tkb tkc tke tkg tkk tkl tkr tkt tlc tle tlg tlk tll tln tlr tlt tlu tnb tnc tne tng tnk tnl tnn tnr tnt trb trc tre trg trk trl trn trr trt tru ttb ttc tte ttg ttk ttl ttn ttr ttt ttu tub tuc tue tug tuk tul tun tur tut tuu ubb ubc ube ubg ubk ubl ubn ubr ubt ubu ucb ucc uce ucg uck ucl ucn ucr uct ucu ueb uec uee ueg uel uen uer uet ugb ugc uge ugg ugk ugl ugn ugr ugt ugu ukb ukc uke ukk ukl ukn ukr uku ulb ulc ule ulg ulk ull uln ulr ult ulu un- unb unc une ung unk unl unn unr unt unu ur- urb urc ure urg urk url urn urr urt uru utb utc ute utk utl utn utr utt utu uuc uue uug uun uur uut uuu

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