a-a a-t aaa aae aaf aak aao aap aas aat aea aee aef aek aeo aep aes aet af- afa afe aff afk afo afp afs aft aka ake akk ako akp aks aoa aoe aof aok aoo aop aos aot ap- apa ape apf apk apo app aps apt as- asa ase asf ask aso asp ass ast at- ata ate atf ato atp ats att eaa eae eaf eak eao eap eas eat eea eee eef eek eeo eep ees eet ef- efa efe eff efo efp efs eft eka eke ekf eko ekp eks ekt eo- eoa eoe eof eok eoo eop eos eot ep- epa epe epf epo epp eps ept es- esa ese esf esk eso esp ess est eta ete etf etk eto etp ets ett faa fae faf fak fao fap fas fat fea fee fef fek feo fep fes fet ffa ffe fff ffk ffo ffp ffs fft fka fkf fkk fkp fkt foa foe fof fok foo fop fos fot fpa fpe fpk fpo fpp fps fpt fsa fse fsf fsk fso fsp fss fst fta fte ftf ftk fto ftp fts ftt k-t ka- kaa kae kaf kak kao kap kas kat ke- kea kee kef kek keo kep kes ket kfa kff kfo kfs kke kkk kkp kks kkt koa koe kof kok koo kop kos kot kpa kpe kpf kpk kpo kpp kps kpt ksa kse ksf ksk kso ksp kss kst kta kte ktf ktk kto ktp kts ktt oaa oae oaf oak oao oap oas oat oea oee oef oeo oep oes oet of- ofa ofe off ofo ofp ofs oft oka oke okk oko okp oks oo- ooa oof ook ooo oop oos oot op- opa ope opf opk opo opp ops opt os- osa ose osf osk oso osp oss ost ot- ota ote otf otk oto otp ots ott p-p paa pae paf pak pao pap pas pat pea pee pef pek peo pep pes pet pfa pfe pff pfk pfo pfp pfs pft pka pke pkf pko pkp pks pkt poa poe pof pok poo pop pos pot ppa ppe ppf ppk ppo ppp pps ppt ps- psa pse psf psk pso psp pss pst pt- pta pte ptf ptk pto ptp pts ptt saa sae saf sak sao sap sas sat se- sea see sef sek seo sep ses set sfa sfe sff sfk sfo sfp sfs sft sk- ska ske skf skk sko skp sks skt soa soe sof sok soo sop sos sot spa spe spf spk spo spp sps spt ss- ssa sse ssf ssk sso ssp sss sst sta ste stf stk sto stp sts stt taa tae taf tak tao tap tas tat te- tea tee tef tek teo tep tes tet tfa tfe tff tfk tfo tfp tfs tft tka tke tkk tko tkp tks tkt to- toa toe tof tok too top tos tot tpa tpe tpf tpk tpo tpp tps tpt tsa tse tsf tsk tso tsp tss tst tta tte ttf ttk tto ttp tts ttt