-er -ey -ic bbb bbc bbe bbi bbk bbo bbr bby bcb bcc bce bci bck bco bcr bcy bcz be- beb bec bee bei bek beo ber bey bez bi- bib bic bie bii bik bio bir biy biz bkb bkc bke bkk bko bkr bob boc boe boi bok boo bor boy boz brb bre bri brk bro brr bry brz by- byc bye byi byk byo byr byz bze bzo bzr bzz c-- cbb cbc cbe cbi cbk cbo cbr cby cbz ccb ccc cce cci cck cco ccr ccz ce- ceb cec cee cei cek ceo cer cey cez ci- cib cic cie cii cik cio cir ckb ckc cki cko cky co- cob coc coe coi cok coo cor coy coz crb crc cre cri crk cro crr cry crz cyb cyc cye cyk cyo cyr cz- czc cze czk czo ebb ebc ebe ebi ebk ebo ebr eby ec- ecb ecc ece eci eck eco ecr eeb eec eee eek eeo eer eey eib eic eie eii eik eio eir ekb ekc eke eki eko ekr eky eo- eob eoc eoe eoi eok eoo eor erb erc ere eri erk ero err ery erz eyc eye eyo eyr eze ezo ezr ezz ibb ibc ibe ibi ibk ibo ibr iby ibz icb icc ice ici ick ico icr icy icz ie- iec iee iei iek ier iey 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 iry iyc iye iyo iyr iyy ize izi izo izy izz k-z kbb kbc kbe kbi kbk kbo kbr kbz kcb kcc kce kci kck kcr ke- keb kec kee kei kek keo ker key kez kib kic kie kii kik kio kir kiz kkb kkc kke kki kkk kkr kky kob koc koe koi kok koo kor koy koz krc kri krk kro krr kry kyc kye kyo kyr kyz kzo kzy o-i ob- obb obc obe obi obk obo obr oby oc- ocb occ oci ock oco ocr ocz oeb oec oee oei oeo oer oey oib oic oie oii oik oio oir oiz okb okc oke oki okk oko okr oo- oob ooc ooi ook ooo oor or- orb orc ore ori ork oro orr ory orz oye oyi oyo oze ozo ozz rbb rbc rbe rbi rbk rbo rbr rcb rcc rce rci rco rcr re- reb rec ree rei rek reo rer rey rez rib ric rie rii rik rio rir riy riz rkb rkc rke rkk rko rky rkz rob roc roe roi rok roo ror roy roz rrb rrc rri rrk rrr ry- ryc rye ryk ryo ryr ryy ryz rzb rze rzo rzy ybc ybe ybi ybr yby ybz ycc yce yci yco ycy yeb yec yee yei yek yeo yer yey yez yie yii yio yir yiz yki ykk yob yoc yoe yoi yok yoo yor yoy yrc yre yro yyb yyc yye yyy yyz yzb yzr yzy zbb zbc zbr zby zce zco zeb zec zee zek zeo zer zez zib zie zik zio zir ziz zo- zob zoc zoe zoi zok zoo zor zro zzr zzy zzz