-er -ic c-- ccc cce cci cco ccr ccs ccu ccv ce- cec cee cei ceo cer ces ceu cev ci- cic cie cii cio cir cis ciu civ co- coc coe coi coo cor cos cou cov crc cre cri cro crr crs cru crv csc cse csi cso csr css csu csv cuc cue cui cuo cur cus cuu cuv cvc cve cvi cvo cvr cvs cvu cvv ec- ecc ece eci eco ecr ecs ecu ecv eec eee eeo eer ees eev eic eie eii eio eir eis eiu eiv eo- eoc eoe eoi eoo eor eos eou erc ere eri ero err ers eru erv es- esc ese esi eso esr ess esu esv eu- euc eue eui eur eus euv evc eve evi evo evr evs evv i-v icc ice ici ico icr ics icu icv ie- iec iee iei ier ies iev iic iie iii iio iir iis iiu io- ioc ioe ioi ioo ior ios iou iov ir- irc ire iri iro irr irs iru irv is- isc ise isi iso isr iss isu isv iu- iuc iue iui iur ius ivc ive ivi ivo ivr ivs ivu ivv o-i oc- occ oci oco ocr ocs ocu ocv oec oee oei oeo oer oes oic oie oii oio oir ois oiu oiv oo- ooc ooi ooo oor oos oov or- orc ore ori oro orr ors oru orv os- osc ose osi oso osr oss osu osv ou- ouc oue oui ouo our ous ov- ovc ove ovi ovo ovs ovv rcc rce rci rco rcr rcs rcu rcv re- rec ree rei reo rer res reu rev ric rie rii rio rir ris riv roc roe roi roo ror ros rou rov rrc rri rrr rrs rru rsc rse rsi rso rsr rss rsu rsv ruc rue rui ruo rur rus ruu ruv rvc rve rvi rvo rvr rvs rvu rvv scc sce sci sco scr scs scu scv se- sec see sei seo ser ses seu sev sic sie sii sio sir sis siu siv soc soe soi soo sor sos sou sov sr- src sre sri sro srr srs srv ss- ssc sse ssi sso ssr sss ssu ssv suc sue sui suo sur sus suu suv svc sve svi svo svr svs svu svv ucc uce uci uco ucr ucs ucu ucv uec uee uei uer ues uic uie uii uio uir uis uiu uoc uoe uoo uor uos ur- urc ure uri uro urr urs uru usc use usi uso usr uss usu usv uuc uue uur uus uuu uvc uve uvo uvs uvu uvv v-e vcc vce vci vco vcr vcs vcu vec vee vei veo ver ves veu vi- vic vie vii vio vir vis viu viv voc voe voi voo vor vos vou vov vrc vre vri vrr vrs vru vsc vse vsi vso vsr vss vsu vsv vue vur vus vuv vvc vvi vvo vvr vvs vvv