-er -ic b-u bbb bbc bbe bbi bbk bbl bbn bbr bbu bcb bcc bce bci bck bcl bcn bcr bcu be- beb bec bee bei bek bel ben ber beu bi- bib bic bie bii bik bil bin bir biu bkb bkc bke bkk bkl bkn bkr blb blc ble bli blk bll bln blr blu bnb bnc bne bni bnk bnl bnn bnr bnu brb bre bri brk brl brn brr bru bub buc bue bui buk bul bun bur buu c-- cbb cbc cbe cbi cbk cbl cbn cbr cbu ccb ccc cce cci cck ccl ccn ccr ccu ce- ceb cec cee cei cek cel cen cer ceu ci- cib cic cie cii cik cil cin cir ciu ckb ckc cki cl- clb clc cle cli clk cll cln clr clu cn- cnb cnc cne cni cnl cnn cnr cnu crb crc cre cri crk crl crn crr cru cub cuc cue cui cuk cul cun cur cuu ebb ebc ebe ebi ebk ebl ebn ebr ebu ec- ecb ecc ece eci eck ecl ecn ecr ecu eeb eec eee eek eel een eer eib eic eie eii eik eil ein eir eiu ekb ekc eke eki ekl ekr eku elb elc ele eli elk ell eln elr elu en- enb enc ene eni enk enl enn enr enu erb erc ere eri erk erl ern err eru eu- eub euc eue eui eul eun eur ibb ibc ibe ibi ibk ibl ibn ibr ibu icb icc ice ici ick icl icn icr icu ie- iec iee iei iek iel ien ier iib iic iie iii iil iin iir iiu ikb ikc ike iki ikk ikl ikr iku il- ilb ilc ile ili ilk ill iln ilr ilu in- inb inc ine ini ink inl inn inr inu ir- irb irc ire iri irk irl irn irr iru iu- iub iuc iue iui iur kbb kbc kbe kbi kbk kbl kbn kbr kbu kcb kcc kce kci kck kcl kcn kcr kcu ke- keb kec kee kei kek kel ken ker kib kic kie kii kik kil kin kir kiu kkb kkc kke kki kkk kkl kkn kkr kku kl- klb klc kli klr klu kn- knc kne kni knk knl knn knr knu krc kri krk krl krn krr kru kub kuc kue kui kuk kul kun kur kuu lbb lbc lbe lbi lbk lbl lbr lbu lcb lcc lce lci lck lcl lcn lcr lcu leb lec lee lei lek lel len ler leu lib lic lie lii lik lil lin lir liu lkb lkl lkr llb llc lle lli llk lll lln llr llu lnb lnc lne lni lnk lnl lnn lnr lnu lrb lrc lri lrk lrn lrr lru lub luc lue lui luk lul lun lur luu n-i nbb nbc nbe nbi nbk nbl nbn nbr nbu ncb ncc nce nci nck ncl ncn ncr ncu ne- neb nec nee nei nek nel nen ner neu nib nic nie nii nik nil nin nir niu nkc nke nki nkk nkn nkr nku nlb nlc nle nli nlk nll nln nlr nlu nnb nnc nne nni nnk nnl nnn nnu nrb nrc nre nri nrk nrl nrn nrr nru nub nuc nue nui nuk nul nun nur nuu rbb rbc rbe rbi rbk rbl rbn rbr rbu rcb rcc rce rci rcl rcn rcr rcu re- reb rec ree rei rek rel ren rer reu rib ric rie rii rik ril rin rir rkb rkc rke rkk rku rlc rle rli rll rln rlr rlu rnb rnc rni rnn rnr rnu rrb rrc rri rrk rrl rrn rrr rru rub ruc rue rui ruk run rur ruu ubb ubc ube ubi ubk ubl ubn ubr ubu ucb ucc uce uci uck ucl ucn ucr ucu ueb uec uee uei uel uen uer uib uic uie uii uil uin uir uiu ukb ukc uke uki ukk ukl ukn ukr uku ulb ulc ule uli ulk ull uln ulr ulu un- unb unc une uni unk unl unn unr unu ur- urb urc ure uri urk url urn urr uru uuc uue uun uur uuu