-er -ic b-u bbb bbc bbe bbi bbl bbr bbs bbt bbu bcb bcc bce bci bcl bcr bcs bct bcu be- beb bec bee bei bel ber bes bet beu bi- bib bic bie bii bil bir bis bit biu blb blc ble bli bll blr bls blt blu brb bre bri brl brr brs brt bru bsb bsc bse bsi bsl bsr bss bst bsu btb btc bte bti btl btr bts btt btu bub buc bue bui bul bur bus but buu c-- cbb cbc cbe cbi cbl cbr cbs cbt cbu ccb ccc cce cci ccl ccr ccs cct ccu ce- ceb cec cee cei cel cer ces cet ceu ci- cib cic cie cii cil cir cis cit ciu cl- clb clc cle cli cll clr cls clt clu crb crc cre cri crl crr crs crt cru csb csc cse csi csl csr css cst csu ctb ctc cte cti ctl ctr cts ctt ctu cub cuc cue cui cul cur cus cut cuu ebb ebc ebe ebi ebl ebr ebs ebt ebu ec- ecb ecc ece eci ecl ecr ecs ect ecu eeb eec eee eel eer ees eet eib eic eie eii eil eir eis eit eiu elb elc ele eli ell elr els elt elu erb erc ere eri erl err ers ert eru es- esb esc ese esi esl esr ess est esu etb etc ete eti etl etr ets ett etu eu- eub euc eue eui eul eur eus eut ibb ibc ibe ibi ibl ibr ibs ibt ibu icb icc ice ici icl icr ics ict icu ie- iec iee iei iel ier ies iet iib iic iie iii iil iir iis iit iiu il- ilb ilc ile ili ill ilr ils ilt ilu ir- irb irc ire iri irl irr irs irt iru is- isb isc ise isi isl isr iss ist isu itb itc ite iti itl its itt itu iu- iub iuc iue iui iur ius iut lbb lbc lbe lbi lbl lbr lbs lbt lbu lcb lcc lce lci lcl lcr lcs lct lcu leb lec lee lei lel ler les let leu lib lic lie lii lil lir lis lit liu llb llc lle lli lll llr lls llt llu lrb lrc lri lrr lrs lrt lru lsb lsc lse lsi lsl lsr lss lst lsu ltb ltc lte lti ltl ltr lts ltt ltu lub luc lue lui lul lur lus lut luu rbb rbc rbe rbi rbl rbr rbs rbt rbu rcb rcc rce rci rcl rcr rcs rct rcu re- reb rec ree rei rel rer res ret reu rib ric rie rii ril rir ris rit rlc rle rli rll rlr rls rlt rlu rrb rrc rri rrl rrr rrs rrt rru rsb rsc rse rsi rsl rsr rss rst rsu rtb rtc rte rti rtl rtr rts rtt rtu rub ruc rue rui rur rus rut ruu sbb sbc sbe sbi sbl sbr sbs sbt sbu scb scc sce sci scl scr scs sct scu se- seb sec see sei sel ser ses set seu sib sic sie sii sil sir sis sit siu slb slc sle sli sll slr sls slt slu sr- srb src sre sri srl srr srs srt ss- ssb ssc sse ssi ssl ssr sss sst ssu stb stc ste sti stl str sts stt stu sub suc sue sui sul sur sus sut suu tbb tbc tbe tbi tbl tbr tbs tbt tbu tcb tcc tce tci tcl tcr tcs tct tcu te- teb tec tee tei tel ter tes tet teu tib tic tie tii til tir tis tit tiu tlc tle tli tll tlr tls tlt tlu trb trc tre tri trl trr trs trt tru tsb tsc tse tsi tsl tsr tss tst tsu ttb ttc tte tti ttl ttr tts ttt ttu tub tuc tue tui tul tur tus tut tuu ubb ubc ube ubi ubl ubr ubs ubt ubu ucb ucc uce uci ucl ucr ucs uct ucu ueb uec uee uei uel uer ues uet uib uic uie uii uil uir uis uit uiu ulb ulc ule uli ull ulr uls ult ulu ur- urb urc ure uri url urr urs urt uru usb usc use usi usl usr uss ust usu utb utc ute uti utl utr uts utt utu uuc uue uur uus uut uuu

bbbb bbbs bbci bbeb bbet bblb bbls bbrc bcbc bcbs bccc bcci bccl bccs bcec bcer bces bcet bcie bcis bcit bcrs bcru bcsc bcsl bcss bctc bcts bcuc bebb bebe bebi beci becs becu beeb beel beer bees beet beic beil beir beis beit bele beli bell bels belt belu berc bere beri berr bers bert beru bes- bese bess best betc bete beti bets bett betu beur bibb bibe bibi bibl bibs bicc bice bici bics bieb biel bier bies biet bieu biis bile bili bill bils bilt bilu birb bire biri birl birr birs birt biru bis- bisc bise bisl biss bist bisu bitc bite bits bitt bitu blbt blcu bleb blee blei bles blet bleu blic blir blis blit blls blrc blss blst blts blub blue blur blus blut brcb brce breb brec bree brei brel brer bres bret bric brie bril bris brit brls brrr brrs brsb brsr brst brtc bruc brue brus brut bsci bscs bseb bsec bsee bser bses bset bsic bslc bssc bsse bsts btcc btcl btcs btec btie btrc btrt btss bttb btus bubb bube bubi bubs bubu bucc buce buci bucs bucu buel buer bueu buic buie buir buis buit buiu bulb bule buli bull buls bult bulu bur- burb bure buri burl burr burs burt buru busc buse busi buss bust busu but- bute buti buts butt buus cbbc cbbs cbcc cbce cbcl cbcr cbcs cbct cbcu cbec cbee cber cbet cbir cbit cblb cblc cbre cbrl cbrt cbsc cbse cbsi cbtc cbtl cbus ccbc cccb cccc ccci cccl cccs cccu ccee ccel ccic ccii ccil ccir ccis