-er -ic bbb bbc bbe bbi bbk bbo bbr bbs bcb bcc bce bci bck bco bcr bcs be- beb bec bee bei bek beo ber bes bi- bib bic bie bii bik bio bir bis bkb bkc bke bkk bko bkr bks bob boc boe boi bok boo bor bos brb bre bri brk bro brr brs bsb bsc bse bsi bsk bso bsr bss c-- cbb cbc cbe cbi cbk cbo cbr cbs ccb ccc cce cci cck cco ccr ccs ce- ceb cec cee cei cek ceo cer ces ci- cib cic cie cii cik cio cir cis ckb ckc cki cko cks co- cob coc coe coi cok coo cor cos crb crc cre cri crk cro crr crs csb csc cse csi csk cso csr css ebb ebc ebe ebi ebk ebo ebr ebs ec- ecb ecc ece eci eck eco ecr ecs eeb eec eee eek eeo eer ees eib eic eie eii eik eio eir eis ekb ekc eke eki eko ekr eks eo- eob eoc eoe eoi eok eoo eor eos erb erc ere eri erk ero err ers es- esb esc ese esi esk eso esr ess ibb ibc ibe ibi ibk ibo ibr ibs icb icc ice ici ick ico icr ics ie- iec iee iei iek ier ies iib iic iie iii iio iir iis ikb ikc ike iki ikk iko ikr iks io- iob ioc ioe ioi ioo ior ios ir- irb irc ire iri irk iro irr irs is- isb isc ise isi isk iso isr iss kbb kbc kbe kbi kbk kbo kbr kbs kcb kcc kce kci kck kcr kcs ke- keb kec kee kei kek keo ker kes kib kic kie kii kik kio kir kis kkb kkc kke kki kkk kkr kks kob koc koe koi kok koo kor kos krc kri krk kro krr krs ksb ksc kse ksi ksk kso ksr kss o-i ob- obb obc obe obi obk obo obr obs oc- ocb occ oci ock oco ocr ocs oeb oec oee oei oeo oer oes oib oic oie oii oik oio oir ois okb okc oke oki okk oko okr oks oo- oob ooc ooi ook ooo oor oos or- orb orc ore ori ork oro orr ors os- osb osc ose osi osk oso osr oss rbb rbc rbe rbi rbk rbo rbr rbs rcb rcc rce rci rco rcr rcs re- reb rec ree rei rek reo rer res rib ric rie rii rik rio rir ris rkb rkc rke rkk rko rks rob roc roe roi rok roo ror ros rrb rrc rri rrk rrr rrs rsb rsc rse rsi rsk rso rsr rss sbb sbc sbe sbi sbk sbo sbr sbs scb scc sce sci sck sco scr scs se- seb sec see sei sek seo ser ses sib sic sie sii sik sio sir sis sk- skb skc ske ski skk sko skr sks sob soc soe soi sok soo sor sos sr- srb src sre sri srk sro srr srs ss- ssb ssc sse ssi ssk sso ssr sss

-ose bbbb bbbs bbci bbeb bbrc bcbc bcbs bccc bcci bccs bcec bcer bces bcie bcis bcor bcos bcrs bcsc bcss bebb bebe bebi bebo beci beck becs beeb beek beer bees beic beik beir beis beke beki beko beks beo- beok beor beos berc bere beri berk bero berr bers bes- bese besk beso bess bibb bibe bibi bibo bibs bicc bice bici bick bico bics bieb bier bies biis bike biko bio- bioc bioi bios birb bire biri birk biro birr birs bis- bisc bise bisk biso biss bobb bobe bobi bobo bobs boce bock boco bocs boec boee boeo boer boes boi- boie boii bois boke boki boko boks boob booc booe book boor boos bor- bore bori bork boro borr bors bosc bose bosi bosk boso boss brcb brce breb brec bree brei brek breo brer bres bric brie brik brio bris brkb brob broc broe brok broo bror bros brrr brrs brsb brsr bsci bscs bseb bsec bsee bser bses bsic bsos bssc bsse c-bo cbbc cbbs cbcc cbce cbcr cbcs cbec cbee cber cbir cbko cbkr cbre cbsc cbse cbsi ccbc cccb cccc ccci cccs ccee ccic ccii ccir ccis ccob ccoc ccrc ccre ccri ccrs ccsi ccss cebs cec- cece ceci ceco cecs ceeb ceec cees ceke ceor ceos cer- cerc cere ceri cero cers cesc cese cesi cesr cess cibc cibe cibi cibo cicc cici cico cicr cics ciee cier cies ciii ciis ciko cikr ciob cior cios cirb circ cire ciri cirk ciro cirr cirs cis- cisc cise cisk cisr ciss ckbc ckbe ckbi ckck ckco ckcs cker ckob ckoc ckoi ckoo ckor ckos ckrc cksb ckso cobb cobe cobi cobo cobs coce cock coco coes coir cois cok- coke coko coob cook coos cor- corb corc core cori cork coro corr cors cosc cose cosi coso coss crbc crcc crce crcr cre- creb crec cree crei creo cres crib cric crie crik cris crkc crob croc croe crok croo cror crss cscb cscc csce csci csco cscr cscs csec csee cser csib csik csio csir csis csks csob csor csos csrc csrs csse cssr ebbc ebbo ebbr ebbs ebcc eber ebes ebic ebis eboe eboo ebor ebos ebro ecbc ecbe eccb eccc ecce ecci ecco eces ecib ecis ecko ecks eco- ecos ecrc ecri ecrr ecsc ecse ecss eecs eeee eees eeke eeks eeoc eerc eero eers eese eesi eesk eick eico eics eiec eiei eier eies eike eiki eiko eiks eire eirs eise eisk eiso eiss ekco ekeb ekek eker ekes ekis ekki ekoi ekos eksi eoes eoir eois eore eori erbb erbe ercc erce ereb erec erei erer eres eric erie erik erio eris erke erki erks erob eroc eroe eroi eroo eros errc erre erro errs erse ersi erso esbo esbs escb esce esci esco escr escs esee esek eseo eser eses esie esik esis eske esko esks eso- esok esos