-er -ic -up c-- ccc cce cci cco ccp ccr ccs ccu ccv ce- cec cee cei ceo cep cer ces ceu cev ci- cic cie cii cio cip cir cis ciu civ co- coc coe coi coo cop cor cos cou cov cpc cpe cpi cpo cpp cpr cps cpu cpv crc cre cri cro crp crr crs cru crv csc cse csi cso csp csr css csu csv cuc cue cui cuo cup cur cus cuu cuv cvc cve cvi cvo cvp cvr cvs cvu cvv ec- ecc ece eci eco ecr ecs ecu ecv eec eee eeo eep eer ees eev eic eie eii eio eip eir eis eiu eiv eo- eoc eoe eoi eoo eop eor eos eou ep- epc epe epi epo epp epr eps epu erc ere eri ero erp err ers eru erv es- esc ese esi eso esp esr ess esu esv eu- euc eue eui eup eur eus euv evc eve evi evo evp evr evs evv i-v icc ice ici ico icp icr ics icu icv ie- iec iee iei iep ier ies iev iic iie iii iio iip iir iis iiu io- ioc ioe ioi ioo iop ior ios iou iov ipc ipe ipi ipo ipp ipr ips ipu ipv ir- irc ire iri iro irp irr irs iru irv is- isc ise isi iso isp isr iss isu isv iu- iuc iue iui iup iur ius ivc ive ivi ivo ivp ivr ivs ivu ivv o-i oc- occ oci oco ocp ocr ocs ocu ocv oec oee oei oeo oep oer oes oic oie oii oio oip oir ois oiu 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 oru orv os- osc ose osi oso osp osr oss osu osv ou- ouc oue oui ouo oup our ous ov- ovc ove ovi ovo ovp ovs ovv p-p pcc pce pci pco pcp pcr pcs pcu pcv pec pee pei peo pep per pes peu pev pic pie pii pio pip pir pis piu piv poc poe poi poo pop por pos pou pov ppc ppe ppi ppo ppp ppr pps ppu ppv prc pre pri pro prp prr prs pru prv ps- psc pse psi pso psp psr pss psu psv puc pue pui pup pur pus puu pvc pve pvi pvo pvp pvr pvs pvu pvv rcc rce rci rco rcp rcr rcs rcu rcv re- rec ree rei reo rep rer res reu rev ric rie rii rio rip rir ris riv roc roe roi roo rop ror ros rou rov rpc rpe rpi rpo rpp rpr rps rpu rpv rrc rri rrp rrr rrs rru rsc rse rsi rso rsp rsr rss rsu rsv ruc rue rui ruo rup rur rus ruu ruv rvc rve rvi rvo rvp rvr rvs rvu rvv scc sce sci sco scp scr scs scu scv se- sec see sei seo sep ser ses seu sev sic sie sii sio sip sir sis siu siv soc soe soi soo sop sor sos sou sov spc spe spi spo spp spr sps spu spv sr- src sre sri sro srp srr srs srv ss- ssc sse ssi sso ssp ssr sss ssu ssv suc sue sui suo sup sur sus suu suv svc sve svi svo svp svr svs svu svv ucc uce uci uco ucp ucr ucs ucu ucv uec uee uei uep uer ues uic uie uii uio uip uir uis uiu uoc uoe uoo uop uor uos up- upc upe upi upo upp upr ups upu upv ur- urc ure uri uro urp urr urs uru usc use usi uso usp usr uss usu usv uuc uue uur uus uuu uvc uve uvo uvs uvu uvv v-e vcc vce vci vco vcp vcr vcs vcu vec vee vei veo vep ver ves veu vi- vic vie vii vio vip vir vis viu viv voc voe voi voo vop vor vos vou vov vpc vpe vpi vpo vpp vpr vps vpu vrc vre vri vrp vrr vrs vru vsc vse vsi vso vsp vsr vss vsu vsv vue vup vur vus vuv vvc vvi vvo vvr vvs vvv