-er a-a a-b a-t aaa aab aad aae aaf aag aak aao aar aas aat ab- aba abb abd abe abf abg abk abo abr abs abt ad- ada adb add ade adf adg adk ado adr ads adt aea aeb aed aee aef aeg aek aeo aer aes aet af- afa afb afd afe aff afg afk afo afr afs aft ag- aga agb agd age agf agg agk ago agr ags agt aka akb akd ake akg akk ako akr aks aoa aob aod aoe aof aog aok aoo aor aos aot ar- ara arb ard are arf arg ark aro arr ars art as- asa asb asd ase asf asg ask aso asr ass ast at- ata atb atd ate atf atg ato atr ats att baa bab bad bae baf bag bak bao bar bas bat bba bbb bbd bbe bbf bbg bbk bbo bbr bbs bbt bda bdb bdd bde bdf bdg bdk bdo bdr bds bdt be- bea beb bed bee bef beg bek beo ber bes bet bfa bfb bfd bfe bff bfg bfo bfr bfs bft bga bgb bgd bge bgf bgg bgk bgo bgr bgs bgt bka bkb bke bkf bkg bkk bko bkr bks bkt boa bob bod boe bof bog bok boo bor bos bot bra brb brd bre brf brg brk bro brr brs brt bsa bsb bsd bse bsf bsg bsk bso bsr bss bst bta btb btd bte btf btg btk bto btr bts btt daa dab dad dae daf dag dak dao dar das dat dba dbb dbd dbe dbf dbg dbk dbo dbr dbs dbt dda ddb ddd dde ddf ddg ddk ddo ddr dds ddt de- dea deb ded dee def deg dek deo der des det dfa dfb dfd dfe dff dfg dfk dfo dfr dfs dft dga dgd dge dgf dgg dgk dgr dgs dgt dka dkb dke dkg dkk dko dkr dks dkt doa dob dod doe dof dog dok doo dor dos dot dra drb drd dre drg drk dro drr drs drt dsa dsb dsd dse dsf dsg dsk dso dsr dss dst dta dtb dtd dte dtf dtg dtk dto dtr dts dtt eaa eab ead eae eaf eag eak eao ear eas eat eba ebb ebd ebe ebf ebg ebk ebo ebr ebs ebt ed- eda edb edd ede edf edg edk edo edr eds edt eea eeb eed eee eef eeg eek eeo eer ees eet ef- efa efb efd efe eff efg efo efr efs eft ega egb egd ege egf egg ego egr egs egt eka ekb ekd eke ekf ekg eko ekr eks ekt eo- eoa eob eod eoe eof eog eok eoo eor eos eot era erb erd ere erf erg erk ero err ers ert es- esa esb esd ese esf esg esk eso esr ess est eta etb etd ete etf etg etk eto etr ets ett faa fab fad fae faf fag fak fao far fas fat fba fbb fbd fbe fbf fbg fbk fbo fbr fbs fbt fda fdb fdd fde fdf fdg fdk fdo fdr fds fdt fea feb fed fee fef feg fek feo fer fes fet ffa ffd ffe fff ffg ffk ffo ffr ffs fft fga fgb fgd fge fgf fgg fgr fgs fgt fka fkb fkf fkg fkk fkt foa fob foe fof fog fok foo for fos fot fra frb frd fre frf frg frk fro frr frs frt fsa fsb fsd fse fsf fsg fsk fso fsr fss fst fta ftb ftd fte ftf ftg ftk fto ftr fts ftt g-d gaa gab gad gae gaf gag gak gao gar gas gat gba gbd gbe gbf gbg gbk gbo gbr gbs gbt gda gdb gdd gde gdf gdk gdo gdr gds gdt ge- gea geb ged gee gef geg gek geo ger ges get gfa gfb gfd gfe gff gfk gfo gfr gfs gft gga ggb ggd ggg ggo ggr ggs ggt gka gkb gkd gko gks gkt goa gob god goe gof gog gok goo gor gos got gra grb grd gre grf grg grk gro grr grs grt gsa gsb gsd gse gsf gsg gsk gso gsr gss gst gta gtb gtd gte gtf gtg gtk gto gtr gts gtt k-t ka- kaa kab kad kae kaf kag kak kao kar kas kat kba kbb kbd kbe kbf kbk kbo kbr kbs kda kdb kde kdf kdg kdk kdo kdr kds kdt ke- kea keb ked kee kef keg kek keo ker kes ket kfa kfd kff kfg kfo kfs kga kgb kgd kgf kgo kgs kkb kke kkk kkr kks kkt koa kob kod koe kof kog kok koo kor kos kot kra krd krf krg krk kro krr krs krt ksa ksb ksd kse ksf ksg ksk kso ksr kss kst kta ktb kte ktf ktg ktk kto ktr kts ktt oaa oab oad oae oaf oag oak oao oar oas oat ob- oba obb obd obe obf obg obk obo obr obs obt oda odb odd ode odf odg odo odr ods odt oea oeb oed oee oef oeg oeo oer oes oet of- ofa ofb ofd ofe off ofg ofo ofr ofs oft oga ogd oge ogf ogg ogo ogs ogt oka okb okd oke okg okk oko okr oks oo- ooa oob ood oof oog ook ooo oor oos oot or- ora orb ord ore orf org ork oro orr ors ort os- osa osb osd ose osf osg osk oso osr oss ost ot- ota otb otd ote otf otg otk oto otr ots ott ra- raa rab rad rae raf rag rak rao rar ras rat rba rbb rbd rbe rbf rbg rbk rbo rbr rbs rbt rda rdb rdd rde rdf rdg rdo rdr rds rdt re- rea reb red ree ref reg rek reo rer res ret rfa rfb rfd rfe rff rfg rfk rfo rfr rfs rft rga rgb rgd rge rgf rgg rgk rgo rgr rgs rgt