-er -ic b-u bbb bbc bbe bbg bbi bbn bbr bbt bbu bcb bcc bce bcg bci bcn bcr bct bcu be- beb bec bee beg bei ben ber bet beu bgb bgc bge bgg bgi bgn bgr bgt bgu bi- bib bic bie big bii bin bir bit biu bnb bnc bne bng bni bnn bnr bnt bnu brb bre brg bri brn brr brt bru btb btc bte btg bti btn btr btt btu bub buc bue bug bui bun bur but buu c-- cbb cbc cbe cbg cbi cbn cbr cbt cbu ccb ccc cce ccg cci ccn ccr cct ccu ce- ceb cec cee ceg cei cen cer cet ceu cgb cgc cge cgg cgi cgn cgr cgt cgu ci- cib cic cie cig cii cin cir cit ciu cn- cnb cnc cne cng cni cnn cnr cnt cnu crb crc cre crg cri crn crr crt cru ctb ctc cte ctg cti ctn ctr ctt ctu cub cuc cue cug cui cun cur cut cuu ebb ebc ebe ebg ebi ebn ebr ebt ebu ec- ecb ecc ece ecg eci ecn ecr ect ecu eeb eec eee eeg een eer eet egb egc ege egg egi egn egr egt egu eib eic eie eig eii ein eir eit eiu en- enb enc ene eng eni enn enr ent enu erb erc ere erg eri ern err ert eru etb etc ete etg eti etn etr ett etu eu- eub euc eue eug eui eun eur eut gbc gbe gbg gbi gbn gbr gbt gbu gcb gcc gce gcg gci gcn gcr gct gcu ge- geb gec gee geg gei gen ger get geu ggb ggc ggg ggi ggn ggr ggt ggu gib gic gie gig gii gin gir git giu gnb gnc gne gni gnn gnr gnt gnu grb grc gre grg gri grn grr grt gru gtb gtc gte gtg gti gtn gtr gtt gtu gu- gub guc gue gug gui gun gur gut guu ibb ibc ibe ibg ibi ibn ibr ibt ibu icb icc ice icg ici icn icr ict icu ie- iec iee ieg iei ien ier iet igb igc ige igg igi ign igr igt igu iib iic iie iii iin iir iit iiu in- inb inc ine ing ini inn inr int inu ir- irb irc ire irg iri irn irr irt iru itb itc ite itg iti itn itt itu iu- iub iuc iue iug iui iur iut n-i nbb nbc nbe nbg nbi nbn nbr nbt nbu ncb ncc nce ncg nci ncn ncr nct ncu ne- neb nec nee neg nei nen ner net neu ngb ngc nge ngg ngi ngn ngt ngu nib nic nie nig nii nin nir nit niu nnb nnc nne nng nni nnn nnt nnu nrb nrc nre nrg nri nrn nrr nrt nru ntb ntc nte ntg nti ntn ntr ntt ntu nub nuc nue nug nui nun nur nut nuu rbb rbc rbe rbg rbi rbn rbr rbt rbu rcb rcc rce rcg rci rcn rcr rct rcu re- reb rec ree reg rei ren rer ret reu rgb rgc rge rgg rgi rgn rgr rgt rib ric rie rig rii rin rir rit rnb rnc rng rni rnn rnr rnt rnu rrb rrc rrg rri rrn rrr rrt rru rtb rtc rte rtg rti rtn rtr rtt rtu rub ruc rue rug rui run rur rut ruu tbb tbc tbe tbg tbi tbn tbr tbt tbu tcb tcc tce tcg tci tcn tcr tct tcu te- teb tec tee teg tei ten ter tet teu tgb tgc tge tgg tgi tgn tgr tgt tgu tib tic tie tig tii tin tir tit tiu tnb tnc tne tng tni tnn tnr tnt trb trc tre trg tri trn trr trt tru ttb ttc tte ttg tti ttn ttr ttt ttu tub tuc tue tug tui tun tur tut tuu ubb ubc ube ubg ubi ubn ubr ubt ubu ucb ucc uce ucg uci ucn ucr uct ucu ueb uec uee ueg uei uen uer uet ugb ugc uge ugg ugi ugn ugr ugt ugu uib uic uie uig uii uin uir uit uiu un- unb unc une ung uni unn unr unt unu ur- urb urc ure urg uri urn urr urt uru utb utc ute uti utn utr utt utu uuc uue uug uun uur uut uuu