-er -ic b-u bbb bbc bbe bbi bbn bbr bbs bbt bbu bcb bcc bce bci bcn bcr bcs bct bcu be- beb bec bee bei ben ber bes bet beu bi- bib bic bie bii bin bir bis bit biu bnb bnc bne bni bnn bnr bns bnt bnu brb bre bri brn brr brs brt bru bsb bsc bse bsi bsn bsr bss bst bsu btb btc bte bti btn btr bts btt btu bub buc bue bui bun bur bus but buu c-- cbb cbc cbe cbi cbn cbr cbs cbt cbu ccb ccc cce cci ccn ccr ccs cct ccu ce- ceb cec cee cei cen cer ces cet ceu ci- cib cic cie cii cin cir cis cit ciu cn- cnb cnc cne cni cnn cnr cns cnt cnu crb crc cre cri crn crr crs crt cru csb csc cse csi csn csr css cst csu ctb ctc cte cti ctn ctr cts ctt ctu cub cuc cue cui cun cur cus cut cuu ebb ebc ebe ebi ebn ebr ebs ebt ebu ec- ecb ecc ece eci ecn ecr ecs ect ecu eeb eec eee een eer ees eet eib eic eie eii ein eir eis eit eiu en- enb enc ene eni enn enr ens ent enu erb erc ere eri ern err ers ert eru es- esb esc ese esi esn esr ess est esu etb etc ete eti etn etr ets ett etu eu- eub euc eue eui eun eur eus eut ibb ibc ibe ibi ibn ibr ibs ibt ibu icb icc ice ici icn icr ics ict icu ie- iec iee iei ien ier ies iet iib iic iie iii iin iir iis iit iiu in- inb inc ine ini inn inr ins int inu ir- irb irc ire iri irn irr irs irt iru is- isb isc ise isi isn isr iss ist isu itb itc ite iti itn its itt itu iu- iub iuc iue iui iur ius iut n-i nbb nbc nbe nbi nbn nbr nbs nbt nbu ncb ncc nce nci ncn ncr ncs nct ncu ne- neb nec nee nei nen ner nes net neu nib nic nie nii nin nir nis nit niu nnb nnc nne nni nnn nns nnt nnu nrb nrc nre nri nrn nrr nrs nrt nru nsb nsc nse nsi nsn nsr nss nst nsu ntb ntc nte nti ntn ntr nts ntt ntu nub nuc nue nui nun nur nus nut nuu rbb rbc rbe rbi rbn rbr rbs rbt rbu rcb rcc rce rci rcn rcr rcs rct rcu re- reb rec ree rei ren rer res ret reu rib ric rie rii rin rir ris rit rnb rnc rni rnn rnr rns rnt rnu rrb rrc rri rrn rrr rrs rrt rru rsb rsc rse rsi rsn rsr rss rst rsu rtb rtc rte rti rtn rtr rts rtt rtu rub ruc rue rui run rur rus rut ruu sbb sbc sbe sbi sbn sbr sbs sbt sbu scb scc sce sci scn scr scs sct scu se- seb sec see sei sen ser ses set seu sib sic sie sii sin sir sis sit siu snb snc sne sni snn snr sns snt snu sr- srb src sre sri srn srr srs srt ss- ssb ssc sse ssi ssn ssr sss sst ssu stb stc ste sti stn str sts stt stu sub suc sue sui sun sur sus sut suu tbb tbc tbe tbi tbn tbr tbs tbt tbu tcb tcc tce tci tcn tcr tcs tct tcu te- teb tec tee tei ten ter tes tet teu tib tic tie tii tin tir tis tit tiu tnb tnc tne tni tnn tnr tns tnt trb trc tre tri trn trr trs trt tru tsb tsc tse tsi tsn tsr tss tst tsu ttb ttc tte tti ttn ttr tts ttt ttu tub tuc tue tui tun tur tus tut tuu ubb ubc ube ubi ubn ubr ubs ubt ubu ucb ucc uce uci ucn ucr ucs uct ucu ueb uec uee uei uen uer ues uet uib uic uie uii uin uir uis uit uiu un- unb unc une uni unn unr uns unt unu ur- urb urc ure uri urn urr urs urt uru usb usc use usi usn usr uss ust usu utb utc ute uti utn utr uts utt utu uuc uue uun uur uus uut uuu