-er -ic c-- ccc cce cci ccp ccr ccs ccv ce- cec cee cei cep cer ces cev ci- cic cie cii cip cir cis civ cpc cpe cpi cpp cpr cps cpv crc cre cri crp crr crs crv csc cse csi csp csr css csv cvc cve cvi cvp cvr cvs cvv ec- ecc ece eci ecr ecs ecv eec eee eep eer ees eev eic eie eii eip eir eis eiv ep- epc epe epi epp epr eps erc ere eri erp err ers erv es- esc ese esi esp esr ess esv evc eve evi evp evr evs evv i-v icc ice ici icp icr ics icv ie- iec iee iei iep ier ies iev iic iie iii iip iir iis ipc ipe ipi ipp ipr ips ipv ir- irc ire iri irp irr irs irv is- isc ise isi isp isr iss isv ivc ive ivi ivp ivr ivs ivv p-p pcc pce pci pcp pcr pcs pcv pec pee pei pep per pes pev pic pie pii pip pir pis piv ppc ppe ppi ppp ppr pps ppv prc pre pri prp prr prs prv ps- psc pse psi psp psr pss psv pvc pve pvi pvp pvr pvs pvv rcc rce rci rcp rcr rcs rcv re- rec ree rei rep rer res rev ric rie rii rip rir ris riv rpc rpe rpi rpp rpr rps rpv rrc rri rrp rrr rrs rsc rse rsi rsp rsr rss rsv rvc rve rvi rvp rvr rvs rvv scc sce sci scp scr scs scv se- sec see sei sep ser ses sev sic sie sii sip sir sis siv spc spe spi spp spr sps spv sr- src sre sri srp srr srs srv ss- ssc sse ssi ssp ssr sss ssv svc sve svi svp svr svs svv v-e vcc vce vci vcp vcr vcs vec vee vei vep ver ves vi- vic vie vii vip vir vis viv vpc vpe vpi vpp vpr vps vrc vre vri vrp vrr vrs vsc vse vsi vsp vsr vss vsv vvc vvi vvr vvs vvv