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