-er bbb bbc bbe bbg bbk bbo bbr bbs bcb bcc bce bcg bck bco bcr bcs be- beb bec bee beg bek beo ber bes bgb bgc bge bgg bgk bgo bgr bgs bkb bkc bke bkg bkk bko bkr bks bob boc boe bog bok boo bor bos brb bre brg brk bro brr brs bsb bsc bse bsg bsk bso bsr bss c-- cbb cbc cbe cbg cbk cbo cbr cbs ccb ccc cce ccg cck cco ccr ccs ce- ceb cec cee ceg cek ceo cer ces cgb cgc cge cgg cgo cgr cgs ckb ckc cko cks co- cob coc coe cog cok coo cor cos crb crc cre crg crk cro crr crs csb csc cse csg csk cso csr css ebb ebc ebe ebg ebk ebo ebr ebs ec- ecb ecc ece ecg eck eco ecr ecs eeb eec eee eeg eek eeo eer ees egb egc ege egg ego egr egs ekb ekc eke ekg eko ekr eks eo- eob eoc eoe eog eok eoo eor eos erb erc ere erg erk ero err ers es- esb esc ese esg esk eso esr ess gbc gbe gbg gbk gbo gbr gbs gcb gcc gce gcg gck gco gcr gcs ge- geb gec gee geg gek geo ger ges ggb ggc ggg ggo ggr ggs gkb gko gks gob goc goe gog gok goo gor gos grb grc gre grg grk gro grr grs gsb gsc gse gsg gsk gso gsr gss kbb kbc kbe kbk kbo kbr kbs kcb kcc kce kcg kck kcr kcs ke- keb kec kee keg kek keo ker kes kgb kgc kgo kgs kkb kkc kke kkk kkr kks kob koc koe kog kok koo kor kos krc krg krk kro krr krs ksb ksc kse ksg ksk kso ksr kss ob- obb obc obe obg obk obo obr obs oc- ocb occ ocg ock oco ocr ocs oeb oec oee oeg oeo oer oes ogc oge ogg ogo ogs okb okc oke okg okk oko okr oks oo- oob ooc oog ook ooo oor oos or- orb orc ore org ork oro orr ors os- osb osc ose osg osk oso osr oss rbb rbc rbe rbg rbk rbo rbr rbs rcb rcc rce rcg rco rcr rcs re- reb rec ree reg rek reo rer res rgb rgc rge rgg rgk rgo rgr rgs rkb rkc rke rkg rkk rko rks rob roc roe rog rok roo ror ros rrb rrc rrg rrk rrr rrs rsb rsc rse rsg rsk rso rsr rss sbb sbc sbe sbg sbk sbo sbr sbs scb scc sce scg sck sco scr scs se- seb sec see seg sek seo ser ses sgb sgc sge sgg sgk sgo sgr sgs sk- skb skc ske skg skk sko skr sks sob soc soe sog sok soo sor sos sr- srb src sre srg srk sro srr srs ss- ssb ssc sse ssg ssk sso ssr sss

-ose bbbb bbbs bbeb bbrc bbrg bcbc bcbg bcbs bccc bccs bcec bcer bces bcgs bcor bcos bcrs bcsc bcss bebb bebe bebo beck becs beeb beeg beek beer bees begg bego begs beke beko beks beo- beok beor beos berc bere berg berk bero berr bers bes- bese besk beso bess bggs bobb bobe bobo bobs boce bock boco bocs boec boee boeo boer boes boge bogg bogo bogs boke boko boks boob booc booe boog book boor boos bor- bore borg bork boro borr bors bosc bose bosk boso boss brcb brce breb brec bree breg brek breo brer bres brkb brob broc broe brog brok broo bror bros brrr brrs brsb brsr bscs bseb bsec bsee bseg bser bses bsgs bsos bssc bsse c-bo cbbc cbbs cbcc cbce cbcr cbcs cbec cbee cber cbgb cbkg cbko cbkr cbre cbsc cbse ccbc cccb cccc cccs ccee ccgc ccgs ccob ccoc ccrc ccre ccrg ccrs ccsg ccss cebs cec- cece ceco cecs ceeb ceec cees cege cego ceke ceor ceos cer- cerc cere cero cers cesc cese cesg cesr cess cgcc cgcg cger cges cggs cgro cgsb cgss ckbc ckbe ckck ckco ckcs cker ckgo ckob ckoc ckoo ckor ckos ckrc cksb ckso cobb cobe cobo cobs coce cock coco coes cogo cogs cok- coke coko coob cook coos cor- corb corc core corg cork coro corr cors cosc cose coso coss crbc crcc crce crcr cre- creb crec cree creg creo cres crgs crkc crob croc croe crok croo cror crss cscb cscc csce csco cscr cscs csec csee cser csks csob csor csos csrc csrs csse cssr ebbc ebbo ebbr ebbs ebcc eber ebes eboe eboo ebor ebos ebro ecbc ecbe eccb eccc ecce ecco eces ecgs ecko ecks eco- ecog ecos ecrc ecrr ecsc ecse ecss eecs eeee eees eegs eeke eeks eeoc eerc eerg eero eers eese eesk egbe egcc egcg egcr egec egee eger eggb egge eggo eggs egks ego- egor egos egre egsc egss ekco ekeb ekek eker ekes ekgs ekos eoes eore erbb erbe ercc erce ereb erec erer eres erg- ergg ergo ergs erke erks erob eroc eroe eroo eros errc erre erro errs erse erso esbo esbs escb esce esco escr escs esee esek eseo eser eses eske esko esks eso- esok esos esse essg esso gbbo gbbs gc-c gcbc gccc gccs gcos gcrg gcse gcss gebe gece geck geek geer gees gege gegg gego geko geo- geog geos gerb gere gero gers gesg gesk geso gess gggg ggss gobe gobo gobs goce gocr goer goes gogo gogs goke goog gook goor goos gorb gore gorg goro gorr gors gose goso goss grbr grcc grce greb grec gree greg gres grob groc grog grok groo gror gros grrr grrs grss gskb gsoc gsos gsse k-os kbbb kbbc kbbe kbbg kbbk kbbo kbbr kbbs kbcb kbce kbck kbco kbcr kbcs kbeb kbec kbee kbek kbeo kber kbes kbgb kbge kbgg kbgo kbgr kbkb kbkg kbkk kbko kbkr kbob kboc kboe kbok kboo kbos kbrb kbrc