-er -ic c-- ccc cce cch cci cco ccp ccr ccs ce- cec cee ceh cei ceo cep cer ces ch- chc che chh chi cho chp chr chs ci- cic cie cih cii cio cip cir cis co- coc coe coh coi coo cop cor cos cpc cpe cph cpi cpo cpp cpr cps crc cre crh cri cro crp crr crs csc cse csh csi cso csp csr css ec- ecc ece ech eci eco ecr ecs eec eee eeo eep eer ees ehc ehe ehh ehi eho ehp ehr ehs eic eie eii eio eip eir eis eo- eoc eoe eoh eoi eoo eop eor eos ep- epc epe eph epi epo epp epr eps erc ere erh eri ero erp err ers es- esc ese esh esi eso esp esr ess h-i hcc hce hch hci hco hcp hcr hcs he- hec hee heh hei heo hep her hes hhc hhe hhh hhi hho hhp hhr hhs hic hie hih hii hio hip hir his hoc hoe hoh hoi hoo hop hor hos hpc hpe hph hpi hpo hpp hpr hps hr- hrc hre hrh hri hro hrp hrr hrs hsc hse hsh hsi hsp hsr hss icc ice ich ici ico icp icr ics ie- iec iee iei iep ier ies ihc ihe ihh ihi iho ihp ihr ihs iic iie iih iii iio iip iir iis io- ioc ioe ioh ioi ioo iop ior ios ipc ipe ipi ipo ipp ipr ips ir- irc ire iri iro irp irr irs is- isc ise ish isi iso isp isr iss o-i oc- occ och oci oco ocp ocr ocs oec oee oeh oei oeo oep oer oes ohc ohe ohh ohi oho ohp ohr ohs oic oie oii oio oip oir ois oo- ooc ooh ooi ooo oop oor oos op- opc ope oph opi opo opp opr ops or- orc ore orh ori oro orp orr ors os- osc ose osh osi oso osp osr oss p-p pcc pce pch pci pco pcp pcr pcs pec pee peh pei peo pep per pes phc phe phi pho php phr phs pic pie pih pii pio pip pir pis poc poe poh poi poo pop por pos ppc ppe pph ppi ppo ppp ppr pps prc pre prh pri pro prp prr prs ps- psc pse psh psi pso psp psr pss rcc rce rch rci rco rcp rcr rcs re- rec ree reh rei reo rep rer res rh- rhc rhe rhh rhi rho rhp rhr rhs ric rie rih rii rio rip rir ris roc roe roh roi roo rop ror ros rpc rpe rph rpi rpo rpp rpr rps rrc rrh rri rrp rrr rrs rsc rse rsh rsi rso rsp rsr rss scc sce sch sci sco scp scr scs se- sec see seh sei seo sep ser ses sh- shc she shh shi sho shp shr shs sic sie sih sii sio sip sir sis soc soe soh soi soo sop sor sos spc spe sph spi spo spp spr sps sr- src sre srh sri sro srp srr srs ss- ssc sse ssh ssi sso ssp ssr sss