-er -ic c-- ccc cce cci cck cco ccr ccs ccu ccv ce- cec cee cei cek ceo cer ces ceu cev ci- cic cie cii cik cio cir cis ciu civ ckc cki cko cks co- coc coe coi cok coo cor cos cou cov crc cre cri crk cro crr crs cru crv csc cse csi csk cso csr css csu csv cuc cue cui cuk cuo cur cus cuu cuv cvc cve cvi cvk cvo cvr cvs cvu cvv ec- ecc ece eci eck eco ecr ecs ecu ecv eec eee eek eeo eer ees eev eic eie eii eik eio eir eis eiu eiv ekc eke eki eko ekr eks eku ekv eo- eoc eoe eoi eok eoo eor eos eou erc ere eri erk ero err ers eru erv es- esc ese esi esk eso esr ess esu esv eu- euc eue eui eur eus euv evc eve evi evo evr evs evv i-v icc ice ici ick ico icr ics icu icv ie- iec iee iei iek ier ies iev iic iie iii iio iir iis iiu ikc ike iki ikk iko ikr iks iku ikv io- ioc ioe ioi ioo ior ios iou iov ir- irc ire iri irk iro irr irs iru irv is- isc ise isi isk iso isr iss isu isv iu- iuc iue iui iur ius ivc ive ivi ivo ivr ivs ivu ivv kcc kce kci kck kcr kcs kcu ke- kec kee kei kek keo ker kes kev kic kie kii kik kio kir kis kiu kiv kkc kke kki kkk kkr kks kku kkv koc koe koi kok koo kor kos kou krc kri krk kro krr krs kru krv ksc kse ksi ksk kso ksr kss ksu ksv kuc kue kui kuk kur kus kuu kvi kvk kvo kvr kvs kvv o-i oc- occ oci ock oco ocr ocs ocu ocv oec oee oei oeo oer oes oic oie oii oik oio oir ois oiu oiv okc oke oki okk oko okr oks oku oo- ooc ooi ook ooo oor oos oov or- orc ore ori ork oro orr ors oru orv os- osc ose osi osk oso osr oss osu osv ou- ouc oue oui ouk ouo our ous ov- ovc ove ovi ovo ovs ovv rcc rce rci rco rcr rcs rcu rcv re- rec ree rei rek reo rer res reu rev ric rie rii rik rio rir ris riv rkc rke rkk rko rks rku rkv roc roe roi rok roo ror ros rou rov rrc rri rrk rrr rrs rru rsc rse rsi rsk rso rsr rss rsu rsv ruc rue rui ruk ruo rur rus ruu ruv rvc rve rvi rvo rvr rvs rvu rvv scc sce sci sck sco scr scs scu scv se- sec see sei sek seo ser ses seu sev sic sie sii sik sio sir sis siu siv sk- skc ske ski skk sko skr sks sku soc soe soi sok soo sor sos sou sov sr- src sre sri srk sro srr srs srv ss- ssc sse ssi ssk sso ssr sss ssu ssv suc sue sui suk suo sur sus suu suv svc sve svi svk svo svr svs svu svv ucc uce uci uck uco ucr ucs ucu ucv uec uee uei uer ues uic uie uii uio uir uis uiu ukc uke uki ukk ukr uku uoc uoe uok uoo uor uos ur- urc ure uri urk uro urr urs uru usc use usi usk 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 vek veo ver ves veu vi- vic vie vii vik vio vir vis viu viv voc voe voi vok voo vor vos vou vov vrc vre vri vrk vrr vrs vru vsc vse vsi vsk vso vsr vss vsu vsv vue vuk vur vus vuv vvc vvi vvo vvr vvs vvv