-er -ey c-- ccc ccd cce cch cco ccr cdc cdd cde cdh cdo cdr cdy ce- cec ced cee ceh ceo cer cey ch- chc chd che chh cho chr chy co- coc cod coe coh coo cor coy crc crd cre crh cro crr cry cyc cyd cye cyo cyr dcc dcd dce dco dcr ddc ddd dde ddh ddo ddr ddy de- dec ded dee deh deo der dey dh- dhc dhd dhe dhh dho dhr doc dod doe doh doo dor doy drc drd dre dro drr dry dy- dyc dyd dye dyo dyr dyy ec- ecc ecd ece ech eco ecr ed- edc edd ede edh edo edr edy eec eed eee eeo eer eey ehc ehd ehe ehh eho ehr eo- eoc eod eoe eoh eoo eor erc erd ere erh ero err ery eyc eyd eye eyo eyr hcc hcd hce hch hco hcr hcy hdc hdd hde hdh hdo hdr hdy he- hec hed hee heh heo her hey hhc hhd hhe hhh hho hhr hhy hoc hod hoe hoh hoo hor hoy hr- hrc hrd hre hrh hro hrr hy- hyc hyd hye hyh hyo hyr hyy oc- occ ocd och oco ocr odc odd ode odh odo odr oec oed oee oeh oeo oer oey ohc ohd ohe ohh oho ohr oo- ooc ood ooh ooo oor or- orc ord ore orh oro orr ory oyd oye oyo rcc rcd rce rch rco rcr rdc rdd rde rdh rdo rdr rdy re- rec red ree reh reo rer rey rh- rhc rhd rhe rhh rho rhr roc rod roe roh roo ror roy rrc rrd rrh rrr ry- ryc ryd rye ryo ryr ryy ycc ycd yce ych yco ycy yde ydo ydy yec yed yee yeh yeo yer yey yhc yhe yoc yod yoe yoo yor yoy yrc yre yro yyc yye yyy