-er -ic bbb bbc bbe bbi bbk bbo bbr bcb bcc bce bci bck bco bcr be- beb bec bee bei bek beo ber bi- bib bic bie bii bik bio bir bkb bkc bke bkk bko bkr bob boc boe boi bok boo bor brb bre bri brk bro brr c-- cbb cbc cbe cbi cbk cbo cbr ccb ccc cce cci cck cco ccr ce- ceb cec cee cei cek ceo cer ci- cib cic cie cii cik cio cir ckb ckc cki cko co- cob coc coe coi cok coo cor crb crc cre cri crk cro crr ebb ebc ebe ebi ebk ebo ebr ec- ecb ecc ece eci eck eco ecr eeb eec eee eek eeo eer eib eic eie eii eik eio eir ekb ekc eke eki eko ekr eo- eob eoc eoe eoi eok eoo eor erb erc ere eri erk ero err ibb ibc ibe ibi ibk ibo ibr icb icc ice ici ick ico icr ie- iec iee iei iek ier iib iic iie iii iio iir ikb ikc ike iki ikk iko ikr io- iob ioc ioe ioi ioo ior ir- irb irc ire iri irk iro irr kbb kbc kbe kbi kbk kbo kbr kcb kcc kce kci kck kcr ke- keb kec kee kei kek keo ker kib kic kie kii kik kio kir kkb kkc kke kki kkk kkr kob koc koe koi kok koo kor krc kri krk kro krr o-i ob- obb obc obe obi obk obo obr oc- ocb occ oci ock oco ocr oeb oec oee oei oeo oer oib oic oie oii oik oio oir okb okc oke oki okk oko okr oo- oob ooc ooi ook ooo oor or- orb orc ore ori ork oro orr rbb rbc rbe rbi rbk rbo rbr rcb rcc rce rci rco rcr re- reb rec ree rei rek reo rer rib ric rie rii rik rio rir rkb rkc rke rkk rko rob roc roe roi rok roo ror rrb rrc rri rrk rrr

bbbb bbci bbeb bbrc bcbc bccc bcci bcec bcer bcie bcor bebb bebe bebi bebo beci beck beeb beek beer beic beik beir beke beki beko beo- beok beor berc bere beri berk bero berr bibb bibe bibi bibo bicc bice bici bick bico bieb bier bike biko bio- bioc bioi birb bire biri birk biro birr bobb bobe bobi bobo boce bock boco boec boee boeo boer boi- boie boii boke boki boko boob booc booe book boor bor- bore bori bork boro borr brcb brce breb brec bree brei brek breo brer bric brie brik brio brkb brob broc broe brok broo bror brrr c-bo cbbc cbcc cbce cbcr cbec cbee cber cbir cbko cbkr cbre ccbc cccb cccc ccci ccee ccic ccii ccir ccob ccoc ccrc ccre ccri cec- cece ceci ceco ceeb ceec ceke ceor cer- cerc cere ceri cero cibc cibe cibi cibo cicc cici cico cicr ciee cier ciii ciko cikr ciob cior cirb circ cire ciri cirk ciro cirr ckbc ckbe ckbi ckck ckco cker ckob ckoc ckoi ckoo ckor ckrc cobb cobe cobi cobo coce cock coco coir cok- coke coko coob cook cor- corb corc core cori cork coro corr crbc crcc crce crcr cre- creb crec cree crei creo crib cric crie crik crkc crob croc croe crok croo cror ebbc ebbo ebbr ebcc eber ebic eboe eboo ebor ebro ecbc ecbe eccb eccc ecce ecci ecco ecib ecko eco- ecrc ecri ecrr eeee eeke eeoc eerc eero eick eico eiec eiei eier eike eiki eiko eire ekco ekeb ekek eker ekki ekoi eoir eore eori erbb erbe ercc erce ereb erec erei erer eric erie erik erio erke erki erob eroc eroe eroi eroo errc erre erro i-be ibec ibie ibrc ibri ibro icbc iccb iccc icci icco iccr icec icee icer icke icoc icor icrc icre icrr iecc ieie ieio iere ieri iiie iiii iiio iioi iioo iirc ikee iker ikki ikko ikoo ikri iobi ioci ioee ioii ioio ioke ioko iooi iooo iore iori irbe ircc iree irer iri- iric irie irio irki irob iroc irrc irre irri k-ci kbbb kbbc kbbe kbbi kbbk kbbo kbbr kbcb kbce kbci kbck kbco kbcr kbeb kbec kbee kbek kbeo kber kbib kbic kbie kbik kbio kbkb kbkk kbko kbkr kbob kboc kboe kboi kbok kboo kbrb kbrc kbre kbri kbrk kbro kcbc kcbi kcbk kcbr kccb kccc kcci kcck kccr kceb kcec kcee kcei kceo kcic kcie kcii kcir kckc kckk kcko kckr kcob kcoe kcor kcrc kcri kcro kcrr kebb kebc kebe kebi kebr keck keco kecr keek keer keib keii keik keio keir kekb kekc keke keki keko keok ker- kerb kerc kere keri kerk kero kerr kibb kibc kibe kibi kibo kibr kicb kicc kice kick kicr kier kiic kiii kiik kikc kiki kikk kiko kikr kioc kioe kioi kiok kioo kirb kirc kiri kirk kiro kirr kkbb kkbe kkbi kkbo kkbr kkcb kkci kkck kkco kkcr kkic kkik kkkk kkob kkoo kkor kkrb kkrc kkre kkrk kkro kkrr kobb kobc kobe kobi kobk kobo kobr kocb koci kock koei koii koir kokb kokc koke koki kokk koko kokr koob kooc kooi kook kooo koor korb korc kore kori kork koro korr krbb krbe krbi krbk krbr krcb krcc krce krci krco kreb krec kree krei krek kreo krib krik krio krkc krke krki krkk krko krkr krob kroc kroe kroi krok kroo kror krrb krrc krre krri krrk krro krrr o-eo obbo obec ober obie obkb oboe oboi obok obor obre obri obro ocbc occc occi oce ocee ocke ocre ocro ocrr oec- oecc oeec oere oici oick oier oiii oike oiko oire oker okic okie okir okko okok okor okre okro oobe oobi oocr ooer oooo oore orbb orbe orbi orbo orce orci orco ore- oreb orec orek oreo orer ori- oric orie orio orke orko oro- oroe orok oror orri orro rbbb rbbr rcbc rcbo rccb rccc rcic rebb rebe rebk rebo recc