-er -ey -ic c-- ccc cce cch cci cco ccp ccr ce- cec cee ceh cei ceo cep cer cey ch- chc che chh chi cho chp chr chy ci- cic cie cih cii cio cip cir co- coc coe coh coi coo cop cor coy cpc cpe cph cpi cpo cpp cpr crc cre crh cri cro crp crr cry cyc cye cyo cyp cyr ec- ecc ece ech eci eco ecr eec eee eeo eep eer eey ehc ehe ehh ehi eho ehp ehr eic eie eii eio eip eir eo- eoc eoe eoh eoi eoo eop eor ep- epc epe eph epi epo epp epr erc ere erh eri ero erp err ery eyc eye eyo eyp eyr h-i hcc hce hch hci hco hcp hcr hcy he- hec hee heh hei heo hep her hey hhc hhe hhh hhi hho hhp hhr hhy hic hie hih hii hio hip hir hoc hoe hoh hoi hoo hop hor hoy hpc hpe hph hpi hpo hpp hpr hpy hr- hrc hre hrh hri hro hrp hrr hy- hyc hye hyh hyi hyo hyp hyr hyy icc ice ich ici ico icp icr icy ie- iec iee iei iep ier iey ihc ihe ihh ihi iho ihp ihr ihy iic iie iih iii iio iip iir io- ioc ioe ioh ioi ioo iop ior ipc ipe ipi ipo ipp ipr ipy ir- irc ire iri iro irp irr iry iyc iye iyo iyr iyy o-i oc- occ och oci oco ocp ocr oec oee oeh oei oeo oep oer oey ohc ohe ohh ohi oho ohp ohr oic oie oii oio oip oir oo- ooc ooh ooi ooo oop oor op- opc ope oph opi opo opp opr opy or- orc ore orh ori oro orp orr ory oye oyi oyo p-p pcc pce pch pci pco pcp pcr pec pee peh pei peo pep per pey phc phe phi pho php phr phy pic pie pih pii pio pip pir poc poe poh poi poo pop por poy ppc ppe pph ppi ppo ppp ppr prc pre prh pri pro prp prr pry py- pyc pye pyo pyr rcc rce rch rci rco rcp rcr re- rec ree reh rei reo rep rer rey rh- rhc rhe rhh rhi rho rhp rhr ric rie rih rii rio rip rir riy roc roe roh roi roo rop ror roy rpc rpe rph rpi rpo rpp rpr rrc rrh rri rrp rrr ry- ryc rye ryo ryr ryy ycc yce ych yci yco ycp ycy yec yee yeh yei yeo yep yer yey yhc yhe yhi yie yih yii yio yip yir yoc yoe yoi yoo yop yor yoy ypo yrc yre yro yrp yyc yye yyy