-er eee eef eek eeo eep eer ees eet eev ef- efe eff efi efo efp efr efs eft eie eif eii eik eio eip eir eis eit eiv eke ekf eki eko ekp ekr eks ekt ekv eo- eoe eof eoi eok eoo eop eor eos eot ep- epe epf epi epo epp epr eps ept ere erf eri erk ero erp err ers ert erv es- ese esf esi esk eso esp esr ess est esv ete etf eti etk eto etp etr ets ett etv eve evf evi evo evp evr evs evt evv fee fef fei fek feo fep fer fes fet fev ffe fff ffi ffk ffo ffp ffr ffs fft ffv fie fif fii fik fip fir fis fit fkf fki fkk fkp fkt foe fof foi fok foo fop for fos fot fpe fpi fpk fpo fpp fpr fps fpt fpv fre frf fri frk fro frp frr frs frt fse fsf fsi fsk fso fsp fsr fss fst fsv fte ftf fti ftk fto ftp ftr fts ftt ftv fvk fvp fvt i-f i-v ie- iee ief iei iek iep ier ies iet iev ife iff ifi ifo ifp ifr ifs ift iie iif iii iio iip iir iis iit ike ikf iki ikk iko ikr iks ikt ikv io- ioe iof ioi ioo iop ior ios iot iov ipe ipf ipi ipo ipp ipr ips ipt ipv ir- ire irf iri irk iro irp irr irs irt irv is- ise isf isi isk iso isp isr iss ist isv ite itf iti itk ito itp its itt itv ive ivf ivi ivo ivp ivr ivs ivt ivv k-t ke- kee kef kei kek keo kep ker kes ket kev kff kfi kfo kfs kie kif kii kik kio kip kir kis kit kiv kke kki kkk kkp kkr kks kkt kkv koe kof koi kok koo kop kor kos kot kpe kpf kpi kpk kpo kpp kpr kps kpt kpv krf kri krk kro krp krr krs krt krv kse ksf ksi ksk kso ksp ksr kss kst ksv kte ktf ktk kto ktp ktr kts ktt ktv kvi kvk kvo kvp kvr kvs kvv o-i oee oef oei oeo oep oer oes oet of- ofe off ofi ofo ofp ofr ofs oft ofv oie oif oii oik oio oip oir ois oit oiv oke oki okk oko okp okr oks oo- oof ooi ook ooo oop oor oos oot oov op- ope opf opi opk opo opp opr ops opt opv or- ore orf ori ork oro orp orr ors ort orv os- ose osf osi osk oso osp osr oss ost osv ot- ote otf oti otk oto otp otr ots ott otv ov- ove ovf ovi ovo ovp ovs ovv p-p pee pef pei pek peo pep per pes pet pev pfe pff pfi pfk pfo pfp pfr pfs pft pfv pie pif pii pik pio pip pir pis pit piv pke pkf pki pko pkp pkr pks pkt poe pof poi pok poo pop por pos pot pov ppe ppf ppi ppk ppo ppp ppr pps ppt ppv pre prf pri prk pro prp prr prs prt prv ps- pse psf psi psk pso psp psr pss pst psv pt- pte ptf pti ptk pto ptp ptr pts ptt ptv pve pvf pvi pvk pvo pvp pvr pvs pvt pvv re- ree ref rei rek reo rep rer res ret rev rfe rff rfi rfk rfo rfp rfr rfs rft rfv rie rif rii rik rio rip rir ris rit riv rke rkf rkk rko rkp rks rkt rkv roe rof roi rok roo rop ror ros rot rov rpe rpf rpi rpk rpo rpp rpr rps rpt rpv rrf rri rrk rrp rrr rrs rrt rse rsf rsi rsk rso rsp rsr rss rst rsv rte rtf rti rtk rto rtp rtr rts rtt rtv rve rvf rvi rvo rvp rvr rvs rvt rvv se- see sef sei sek seo sep ser ses set sev sfe sff sfi sfk sfo sfp sfr sfs sft sfv sie sif sii sik sio sip sir sis sit siv sk- ske skf ski skk sko skp skr sks skt soe sof soi sok soo sop sor sos sot sov spe spf spi spk spo spp spr sps spt spv sr- sre srf sri srk sro srp srr srs srt srv ss- sse ssf ssi ssk sso ssp ssr sss sst ssv ste stf sti stk sto stp str sts stt stv sve svf svi svk svo svp svr svs svt svv te- tee tef tei tek teo tep ter tes tet tev tfe tff tfi tfk tfo tfp tfr tfs tft tie tif tii tik tio tip tir tis tit tiv tke tkk tko tkp tkr tks tkt to- toe tof toi tok too top tor tos tot tov tpe tpf tpi tpk tpo tpp tpr tps tpt tpv tre trf tri trk tro trp trr trs trt trv tse tsf tsi tsk tso tsp tsr tss tst tsv tte ttf tti ttk tto ttp ttr tts ttt ttv tve tvf tvi tvk tvo tvp tvr tvs tvt v-e vee vef vei vek veo vep ver ves vet vff vfi vfp vfr vfs vft vfv vi- vie vif vii vik vio vip vir vis vit viv vkp vkt voe vof voi vok voo vop vor vos vot vov vpe vpf vpi vpk vpo vpp vpr vps vpt vre vrf vri vrk vrp vrr vrs vrt vse vsf vsi vsk vso vsp vsr vss vst vsv vte vti vtk vto vtr vts vtt vtv vvi vvo vvr vvs vvt vvv