-er -ey c-- ccc ccd cce cch cck cco ccr ccs cdc cdd cde cdh cdk cdo cdr cds cdy ce- cec ced cee ceh cek ceo cer ces cey ch- chc chd che chh chk cho chr chs chy ckc ckd ckh cko cks cky co- coc cod coe coh cok coo cor cos coy crc crd cre crh crk cro crr crs cry csc csd cse csh csk cso csr css csy cyc cyd cye cyk cyo cyr cys dcc dcd dce dck dco dcr dcs ddc ddd dde ddh ddk ddo ddr dds ddy de- dec ded dee deh dek deo der des dey dh- dhc dhd dhe dhh dhk dho dhr dhs dkc dke dkk dko dkr dks doc dod doe doh dok doo dor dos doy drc drd dre drk dro drr drs dry dsc dsd dse dsh dsk dso dsr dss dsy dy- dyc dyd dye dyk dyo dyr dys dyy ec- ecc ecd ece ech eck eco ecr ecs ed- edc edd ede edh edk edo edr eds edy eec eed eee eek eeo eer ees eey ehc ehd ehe ehh eho ehr ehs ekc ekd eke ekh eko ekr eks eky eo- eoc eod eoe eoh eok eoo eor eos erc erd ere erh erk ero err ers ery es- esc esd ese esh esk eso esr ess esy eyc eyd eye eyo eyr eys hcc hcd hce hch hck hco hcr hcs hcy hdc hdd hde hdh hdk hdo hdr hds hdy he- hec hed hee heh hek heo her hes hey hhc hhd hhe hhh hhk hho hhr hhs hhy hkd hkh hkk hko hkr hks hoc hod hoe hoh hok hoo hor hos hoy hr- hrc hrd hre hrh hrk hro hrr hrs hsc hsd hse hsh hsk hsr hss hsy hy- hyc hyd hye hyh hyo hyr hys hyy kcc kcd kce kch kck kcr kcs kdc kde kdh kdk kdo kdr kds kdy ke- kec ked kee keh kek keo ker kes key khe khh khk kho khr khs kkc kke kkh kkk kkr kks kky koc kod koe koh kok koo kor kos koy krc krd krk kro krr krs kry ksc ksd kse ksh ksk kso ksr kss kyc kyd kye kyo kyr kys oc- occ ocd och ock oco ocr ocs odc odd ode odh odo odr ods oec oed oee oeh oeo oer oes oey ohc ohd ohe ohh oho ohr ohs okc okd oke okk oko okr oks oo- ooc ood ooh ook ooo oor oos or- orc ord ore orh ork oro orr ors ory os- osc osd ose osh osk oso osr oss oyd oye oyo oys rcc rcd rce rch rco rcr rcs rdc rdd rde rdh rdo rdr rds rdy re- rec red ree reh rek reo rer res rey rh- rhc rhd rhe rhh rho rhr rhs rkc rke rkk rko rks rky roc rod roe roh rok roo ror ros roy rrc rrd rrh rrk rrr rrs rsc rsd rse rsh rsk rso rsr rss ry- ryc ryd rye ryk ryo ryr rys ryy scc scd sce sch sck sco scr scs sdc sdd sde sdh sdk sdo sdr sds sdy se- sec sed see seh sek seo ser ses sey sh- shc shd she shh shk sho shr shs shy sk- skc skd ske skh skk sko skr sks sky soc sod soe soh sok soo sor sos soy sr- src srd sre srh srk sro srr srs sry ss- ssc ssd sse ssh ssk sso ssr sss sy- syc syd sye syh syk syr sys ycc ycd yce ych yco ycs ycy yde ydo yds ydy yec yed yee yeh yek yeo yer yes yey yhc yhe yhs ykk yoc yod yoe yok yoo yor yos yoy yrc yre yro yrs ysc yse ysk yso ysr yss ysy yyc yye yys yyy