-er -ic c-- ccc cce cci cco ccp ccr ccs ccv ce- cec cee cei ceo cep cer ces cev ci- cic cie cii cio cip cir cis civ co- coc coe coi coo cop cor cos cov cpc cpe cpi cpo cpp cpr cps cpv crc cre cri cro crp crr crs crv csc cse csi cso csp csr css csv cvc cve cvi cvo cvp cvr cvs cvv ec- ecc ece eci eco ecr ecs ecv eec eee eeo eep eer ees eev eic eie eii eio eip eir eis eiv eo- eoc eoe eoi eoo eop eor eos ep- epc epe epi epo epp epr eps erc ere eri ero erp err ers erv es- esc ese esi eso esp esr ess esv evc eve evi evo evp evr evs evv i-v icc ice ici ico icp icr ics icv ie- iec iee iei iep ier ies iev iic iie iii iio iip iir iis io- ioc ioe ioi ioo iop ior ios iov ipc ipe ipi ipo ipp ipr ips ipv ir- irc ire iri iro irp irr irs irv is- isc ise isi iso isp isr iss isv ivc ive ivi ivo ivp ivr ivs ivv o-i oc- occ oci oco ocp ocr ocs ocv oec oee oei oeo oep oer oes oic oie oii oio oip oir ois oiv oo- ooc ooi ooo oop oor oos oov op- opc ope opi opo opp opr ops opv or- orc ore ori oro orp orr ors orv os- osc ose osi oso osp osr oss osv ov- ovc ove ovi ovo ovp ovs ovv p-p pcc pce pci pco pcp pcr pcs pcv pec pee pei peo pep per pes pev pic pie pii pio pip pir pis piv poc poe poi poo pop por pos pov ppc ppe ppi ppo ppp ppr pps ppv prc pre pri pro prp prr prs prv ps- psc pse psi pso psp psr pss psv pvc pve pvi pvo pvp pvr pvs pvv rcc rce rci rco rcp rcr rcs rcv re- rec ree rei reo rep rer res rev ric rie rii rio rip rir ris riv roc roe roi roo rop ror ros rov rpc rpe rpi rpo rpp rpr rps rpv rrc rri rrp rrr rrs rsc rse rsi rso rsp rsr rss rsv rvc rve rvi rvo rvp rvr rvs rvv scc sce sci sco scp scr scs scv se- sec see sei seo sep ser ses sev sic sie sii sio sip sir sis siv soc soe soi soo sop sor sos sov spc spe spi spo spp spr sps spv sr- src sre sri sro srp srr srs srv ss- ssc sse ssi sso ssp ssr sss ssv svc sve svi svo svp svr svs svv v-e vcc vce vci vco vcp vcr vcs vec vee vei veo vep ver ves vi- vic vie vii vio vip vir vis viv voc voe voi voo vop vor vos vov vpc vpe vpi vpo vpp vpr vps vrc vre vri vrp vrr vrs vsc vse vsi vso vsp vsr vss vsv vvc vvi vvo vvr vvs vvv