-er eee eek eeo eer ees eet eev eie eii eik eio eir eis eit eiv eke eki eko ekr eks ekt ekv eo- eoe eoi eok eoo eor eos eot ere eri erk ero err ers ert erv es- ese esi esk eso esr ess est esv ete eti etk eto etr ets ett etv eve evi evo evr evs evt evv i-v ie- iee iei iek ier ies iet iev iie iii iio iir iis iit ike iki ikk iko ikr iks ikt ikv io- ioe ioi ioo ior ios iot iov ir- ire iri irk iro irr irs irt irv is- ise isi isk iso isr iss ist isv ite iti itk ito its itt itv ive ivi ivo ivr ivs ivt ivv k-t ke- kee kei kek keo ker kes ket kev kie kii kik kio kir kis kit kiv kke kki kkk kkr kks kkt kkv koe koi kok koo kor kos kot kri krk kro krr krs krt krv kse ksi ksk kso ksr kss kst ksv kte ktk kto ktr kts ktt ktv kvi kvk kvo kvr kvs kvv o-i oee oei oeo oer oes oet oie oii oik oio oir ois oit oiv oke oki okk oko okr oks oo- ooi ook ooo oor oos oot oov or- ore ori ork oro orr ors ort orv os- ose osi osk oso osr oss ost osv ot- ote oti otk oto otr ots ott otv ov- ove ovi ovo ovs ovv re- ree rei rek reo rer res ret rev rie rii rik rio rir ris rit riv rke rkk rko rks rkt rkv roe roi rok roo ror ros rot rov rri rrk rrr rrs rrt rse rsi rsk rso rsr rss rst rsv rte rti rtk rto rtr rts rtt rtv rve rvi rvo rvr rvs rvt rvv se- see sei sek seo ser ses set sev sie sii sik sio sir sis sit siv sk- ske ski skk sko skr sks skt soe soi sok soo sor sos sot sov sr- sre sri srk sro srr srs srt srv ss- sse ssi ssk sso ssr sss sst ssv ste sti stk sto str sts stt stv sve svi svk svo svr svs svt svv te- tee tei tek teo ter tes tet tev tie tii tik tio tir tis tit tiv tke tkk tko tkr tks tkt to- toe toi tok too tor tos tot tov tre tri trk tro trr trs trt trv tse tsi tsk tso tsr tss tst tsv tte tti ttk tto ttr tts ttt ttv tve tvi tvk tvo tvr tvs tvt v-e vee vei vek veo ver ves vet vi- vie vii vik vio vir vis vit viv vkt voe voi vok voo vor vos vot vov vre vri vrk vrr vrs vrt vse vsi vsk vso vsr vss vst vsv vte vti vtk vto vtr vts vtt vtv vvi vvo vvr vvs vvt vvv