-er -ic c-- ccc cce cci cck cco ccr ccs cct ccv ce- cec cee cei cek ceo cer ces cet cev ci- cic cie cii cik cio cir cis cit civ ckc cki cko cks ckt co- coc coe coi cok coo cor cos cot cov crc cre cri crk cro crr crs crt crv csc cse csi csk cso csr css cst csv ctc cte cti ctk cto ctr cts ctt ctv cvc cve cvi cvk cvo cvr cvs cvt cvv ec- ecc ece eci eck eco ecr ecs ect ecv eec eee eek eeo eer ees eet eev eic eie eii eik eio eir eis eit eiv ekc eke eki eko ekr eks ekt ekv eo- eoc eoe eoi eok eoo eor eos eot erc ere eri erk ero err ers ert erv es- esc ese esi esk eso esr ess est esv etc ete eti etk eto etr ets ett etv evc eve evi evo evr evs evt evv i-v icc ice ici ick ico icr ics ict icv ie- iec iee iei iek ier ies iet iev iic iie iii iio iir iis iit ikc ike iki ikk iko ikr iks ikt ikv io- ioc ioe ioi ioo ior ios iot iov ir- irc ire iri irk iro irr irs irt irv is- isc ise isi isk iso isr iss ist isv itc ite iti itk ito its itt itv ivc ive ivi ivo ivr ivs ivt ivv k-t kcc kce kci kck kcr kcs kct ke- kec kee kei kek keo ker kes ket kev kic kie kii kik kio kir kis kit kiv kkc kke kki kkk kkr kks kkt kkv koc koe koi kok koo kor kos kot krc kri krk kro krr krs krt krv ksc kse ksi ksk kso ksr kss kst ksv ktc kte ktk kto ktr kts ktt ktv kvi kvk kvo kvr kvs kvv o-i oc- occ oci ock oco ocr ocs oct ocv oec oee oei oeo oer oes oet oic oie oii oik oio oir ois oit oiv okc oke oki okk oko okr oks oo- ooc ooi ook ooo oor oos oot oov or- orc ore ori ork oro orr ors ort orv os- osc ose osi osk oso osr oss ost osv ot- otc ote oti otk oto otr ots ott otv ov- ovc ove ovi ovo ovs ovv rcc rce rci rco rcr rcs rct rcv re- rec ree rei rek reo rer res ret rev ric rie rii rik rio rir ris rit riv rkc rke rkk rko rks rkt rkv roc roe roi rok roo ror ros rot rov rrc rri rrk rrr rrs rrt rsc rse rsi rsk rso rsr rss rst rsv rtc rte rti rtk rto rtr rts rtt rtv rvc rve rvi rvo rvr rvs rvt rvv scc sce sci sck sco scr scs sct scv se- sec see sei sek seo ser ses set sev sic sie sii sik sio sir sis sit siv sk- skc ske ski skk sko skr sks skt soc soe soi sok soo sor sos sot sov sr- src sre sri srk sro srr srs srt srv ss- ssc sse ssi ssk sso ssr sss sst ssv stc ste sti stk sto str sts stt stv svc sve svi svk svo svr svs svt svv tcc tce tci tck tco tcr tcs tct tcv te- tec tee tei tek teo ter tes tet tev tic tie tii tik tio tir tis tit tiv tkc tke tkk tko tkr tks tkt to- toc toe toi tok too tor tos tot tov trc tre tri trk tro trr trs trt trv tsc tse tsi tsk tso tsr tss tst tsv ttc tte tti ttk tto ttr tts ttt ttv tvc tve tvi tvk tvo tvr tvs tvt v-e vcc vce vci vco vcr vcs vct vec vee vei vek veo ver ves vet vi- vic vie vii vik vio vir vis vit viv vkt voc voe voi vok voo vor vos vot vov vrc vre vri vrk vrr vrs vrt vsc vse vsi vsk vso vsr vss vst vsv vtc vte vti vtk vto vtr vts vtt vtv vvc vvi vvo vvr vvs vvt vvv