-er -ey bbb bbc bbe bbh bbk bbn bbo bbr bby bcb bcc bce bch bck bcn bco bcr bcy be- beb bec bee beh bek ben beo ber bey bhb bhc bhe bhh bhk bho bhr bkb bkc bke bkk bkn bko bkr bnb bnc bne bnk bnn bno bnr bob boc boe boh bok bon boo bor boy brb bre brh brk brn bro brr bry by- byc bye byh byk byn byo byr c-- cbb cbc cbe cbh cbk cbn cbo cbr cby ccb ccc cce cch cck ccn cco ccr ce- ceb cec cee ceh cek cen ceo cer cey ch- chb chc che chh chk chn cho chr chy ckb ckc ckh cko cky cn- cnb cnc cne cnh cnn cno cnr cny co- cob coc coe coh cok con coo cor coy crb crc cre crh crk crn cro crr cry cyb cyc cye cyk cyn cyo cyr ebb ebc ebe ebh ebk ebn ebo ebr eby ec- ecb ecc ece ech eck ecn eco ecr eeb eec eee eek een eeo eer eey ehb ehc ehe ehh ehn eho ehr ekb ekc eke ekh eko ekr eky en- enb enc ene enh enk enn eno enr eny eo- eob eoc eoe eoh eok eon eoo eor erb erc ere erh erk ern ero err ery eyc eye eyn eyo eyr hbb hbc hbe hbh hbk hbn hbo hbr hby hcb hcc hce hch hck hcn hco hcr hcy he- heb hec hee heh hek hen heo her hey hhb hhc hhe hhh hhk hhn hho hhr hhy hkb hkh hkk hkn hko hkr hnb hnc hne hnh hnk hnn hno hny hob hoc hoe hoh hok hon hoo hor hoy hr- hrb hrc hre hrh hrk hrn hro hrr hy- hyb hyc hye hyh hyn hyo hyr hyy kbb kbc kbe kbh kbk kbn kbo kbr kcb kcc kce kch kck kcn kcr ke- keb kec kee keh kek ken keo ker key khe khh khk khn kho khr kkb kkc kke kkh kkk kkn kkr kky kn- knc kne knk knn kno knr kob koc koe koh kok kon koo kor koy krc krk krn kro krr kry kyc kye kyn kyo kyr nbb nbc nbe nbk nbn nbo nbr ncb ncc nce nch nck ncn nco ncr ne- neb nec nee neh nek nen neo ner ney nhb nhc nhe nhh nhk nhn nhr nhy nkc nke nkk nkn nko nkr nky nnb nnc nne nnh nnk nnn nno no- nob noc noe noh nok non noo nor noy nrb nrc nre nrk nrn nro nrr nry nyc nye nyk nyn nyo nyy ob- obb obc obe obh obk obn obo obr oby oc- ocb occ och ock ocn oco ocr oeb oec oee oeh oen oeo oer oey ohc ohe ohh ohn oho ohr okb okc oke okk oko okr on- onb onc one onh onk onn ono onr ony oo- oob ooc ooh ook oon ooo oor or- orb orc ore orh ork orn oro orr ory oye oyo rbb rbc rbe rbh rbk rbn rbo rbr rcb rcc rce rch rcn rco rcr re- reb rec ree reh rek ren reo rer rey rh- rhb rhc rhe rhh rhn rho rhr rkb rkc rke rkk rko rky rnb rnc rnh rnn rno rnr rny rob roc roe roh rok ron roo ror roy rrb rrc rrh rrk rrn rrr ry- ryc rye ryk ryn ryo ryr ryy ybc ybe ybr yby ycc yce ych yco ycy yeb yec yee yeh yek yen yeo yer yey yhc yhe ykk ykn yne ynk ynn yny yob yoc yoe yok yon yoo yor yoy yrc yre yrn yro yyb yyc yye yyy