-er -ic b-u bbb bbc bbe bbi bbk bbl bbn bbr bbs bbt bbu bcb bcc bce bci bck bcl bcn bcr bcs bct bcu be- beb bec bee bei bek bel ben ber bes bet beu bi- bib bic bie bii bik bil bin bir bis bit biu bkb bkc bke bkk bkl bkn bkr bks bkt blb blc ble bli blk bll bln blr bls blt blu bnb bnc bne bni bnk bnl bnn bnr bns bnt bnu brb bre bri brk brl brn brr brs brt bru bsb bsc bse bsi bsk bsl bsn bsr bss bst bsu btb btc bte bti btk btl btn btr bts btt btu bub buc bue bui buk bul bun bur bus but buu c-- cbb cbc cbe cbi cbk cbl cbn cbr cbs cbt cbu ccb ccc cce cci cck ccl ccn ccr ccs cct ccu ce- ceb cec cee cei cek cel cen cer ces cet ceu ci- cib cic cie cii cik cil cin cir cis cit ciu ckb ckc cki cks ckt cl- clb clc cle cli clk cll cln clr cls clt clu cn- cnb cnc cne cni cnl cnn cnr cns cnt cnu crb crc cre cri crk crl crn crr crs crt cru csb csc cse csi csk csl csn csr css cst csu ctb ctc cte cti ctk ctl ctn ctr cts ctt ctu cub cuc cue cui cuk cul cun cur cus cut cuu ebb ebc ebe ebi ebk ebl ebn ebr ebs ebt ebu ec- ecb ecc ece eci eck ecl ecn ecr ecs ect ecu eeb eec eee eek eel een eer ees eet eib eic eie eii eik eil ein eir eis eit eiu ekb ekc eke eki ekl ekr eks ekt eku elb elc ele eli elk ell eln elr els elt elu en- enb enc ene eni enk enl enn enr ens ent enu erb erc ere eri erk erl ern err ers ert eru es- esb esc ese esi esk esl esn esr ess est esu etb etc ete eti etk etl etn etr ets ett etu eu- eub euc eue eui eul eun eur eus eut ibb ibc ibe ibi ibk ibl ibn ibr ibs ibt ibu icb icc ice ici ick icl icn icr ics ict icu ie- iec iee iei iek iel ien ier ies iet iib iic iie iii iil iin iir iis iit iiu ikb ikc ike iki ikk ikl ikr iks ikt iku il- ilb ilc ile ili ilk ill iln ilr ils ilt ilu in- inb inc ine ini ink inl inn inr ins int inu ir- irb irc ire iri irk irl irn irr irs irt iru is- isb isc ise isi isk isl isn isr iss ist isu itb itc ite iti itk itl itn its itt itu iu- iub iuc iue iui iur ius iut k-t kbb kbc kbe kbi kbk kbl kbn kbr kbs kbu kcb kcc kce kci kck kcl kcn kcr kcs kct kcu ke- keb kec kee kei kek kel ken ker kes ket kib kic kie kii kik kil kin kir kis kit kiu kkb kkc kke kki kkk kkl kkn kkr kks kkt kku kl- klb klc kli klr kls klt klu kn- knc kne kni knk knl knn knr knt knu krc kri krk krl krn krr krs krt kru ksb ksc kse ksi ksk ksl ksn ksr kss kst ksu ktb ktc kte ktk ktl ktn ktr kts ktt ktu kub kuc kue kui kuk kul kun kur kus kut kuu lbb lbc lbe lbi lbk lbl lbr lbs lbt lbu lcb lcc lce lci lck lcl lcn lcr lcs lct lcu leb lec lee lei lek lel len ler les let leu lib lic lie lii lik lil lin lir lis lit liu lkb lkl lkr lks lkt llb llc lle lli llk lll lln llr lls llt llu lnb lnc lne lni lnk lnl lnn lnr lns lnt lnu lrb lrc lri lrk lrn lrr lrs lrt lru lsb lsc lse lsi lsk lsl lsn lsr lss lst lsu ltb ltc lte lti ltk ltl ltr lts ltt ltu lub luc lue lui luk lul lun lur lus lut luu n-i nbb nbc nbe nbi nbk nbl nbn nbr nbs nbt nbu ncb ncc nce nci nck ncl ncn ncr ncs nct ncu ne- neb nec nee nei nek nel nen ner nes net neu nib nic nie nii nik nil nin nir nis nit niu nkc nke nki nkk nkn nkr nks nkt nku nlb nlc nle nli nlk nll nln nlr nls nlt nlu nnb nnc nne nni nnk nnl nnn nns nnt nnu nrb nrc nre nri nrk nrl nrn nrr nrs nrt nru nsb nsc nse nsi nsk nsl nsn nsr nss nst nsu ntb ntc nte nti ntk ntn ntr nts ntt ntu nub nuc nue nui nuk nul nun nur nus nut nuu rbb rbc rbe rbi rbk rbl rbn rbr rbs rbt rbu rcb rcc rce rci rcl rcn rcr rcs rct rcu re- reb rec ree rei rek rel ren rer res ret reu rib ric rie rii rik ril rin rir ris rit rkb rkc rke rkk rks rkt rku rlc rle rli rll rln rlr rls rlt rlu rnb rnc rni rnn rnr rns rnt rnu rrb rrc rri rrk rrl rrn rrr rrs rrt rru rsb rsc rse rsi rsk rsl rsn rsr rss rst rsu rtb rtc rte rti rtk rtl rtn rtr rts rtt rtu rub ruc rue rui ruk run rur rus rut ruu sbb sbc sbe sbi sbk sbl sbn sbr sbs sbt sbu scb scc sce sci sck scl scn scr scs sct scu se- seb sec see sei sek sel sen ser ses set seu sib sic sie sii sik sil sin sir sis sit siu sk- skb skc ske ski skk skl skr sks skt sku slb slc sle sli slk sll sln slr sls slt slu snb