-er a-a a-b a-t aaa aab aad aae aaf aak aam aao aar aat ab- aba abb abd abe abf abk abm abo abr abt ad- ada adb add ade adf adk adm ado adr adt aea aeb aed aee aef aek aem aeo aer aet af- afa afb afd afe aff afk afm afo afr aft aka akb akd ake akk akm ako akr ama amb amd ame amf amk amm amo amr amt aoa aob aod aoe aof aok aom aoo aor aot ar- ara arb ard are arf ark arm aro arr art at- ata atb atd ate atf atm ato atr att baa bab bad bae baf bak bam bao bar bat bba bbb bbd bbe bbf bbk bbm bbo bbr bbt bda bdb bdd bde bdf bdk bdm bdo bdr bdt be- bea beb bed bee bef bek bem beo ber bet bfa bfb bfd bfe bff bfm bfo bfr bft bka bkb bke bkf bkk bkm bko bkr bkt bma bmb bmd bme bmf bmk bmm bmo bmr bmt boa bob bod boe bof bok bom boo bor bot bra brb brd bre brf brk brm bro brr brt bta btb btd bte btf btk btm bto btr btt daa dab dad dae daf dak dam dao dar dat dba dbb dbd dbe dbf dbk dbm dbo dbr dbt dda ddb ddd dde ddf ddk ddm ddo ddr ddt de- dea deb ded dee def dek dem deo der det dfa dfb dfd dfe dff dfk dfm dfo dfr dft dka dkb dke dkk dkm dko dkr dkt dma dmb dmd dme dmf dmk dmm dmo dmr dmt doa dob dod doe dof dok dom doo dor dot dra drb drd dre drk drm dro drr drt dta dtb dtd dte dtf dtk dtm dto dtr dtt eaa eab ead eae eaf eak eam eao ear eat eba ebb ebd ebe ebf ebk ebm ebo ebr ebt ed- eda edb edd ede edf edk edm edo edr edt eea eeb eed eee eef eek eem eeo eer eet ef- efa efb efd efe eff efm efo efr eft eka ekb ekd eke ekf eko ekr ekt em- ema emb emd eme emf emk emm emo emr emt eo- eoa eob eod eoe eof eok eom eoo eor eot era erb erd ere erf erk erm ero err ert eta etb etd ete etf etk etm eto etr ett faa fab fad fae faf fak fam fao far fat fba fbb fbd fbe fbf fbk fbm fbo fbr fbt fda fdb fdd fde fdf fdk fdm fdo fdr fdt fea feb fed fee fef fek fem feo fer fet ffa ffd ffe fff ffk ffm ffo ffr fft fka fkb fkf fkk fkm fkt fma fmb fmd fme fmf fmm fmo fmr fmt foa fob foe fof fok fom foo for fot fra frb frd fre frf frk frm fro frr frt fta ftb ftd fte ftf ftk ftm fto ftr ftt k-t ka- kaa kab kad kae kaf kak kam kao kar kat kba kbb kbd kbe kbf kbk kbm kbo kbr kda kdb kde kdf kdk kdm kdo kdr kdt ke- kea keb ked kee kef kek kem keo ker ket kfa kfd kff kfm kfo kkb kke kkk kkm kkr kkt kma kmb kmd kme kmf kmk kmm kmo kmt koa kob kod koe kof kok kom koo kor kot kra krd krf krk kro krr krt kta ktb kte ktf ktk ktm kto ktr ktt m-f m-o m-r maa mab mad mae maf mak mam mao mar mat mba mbb mbd mbe mbf mbk mbm mbo mbr mbt mda mdb mdd mde mdf mdk mdm mdo mdr mdt mea meb med mee mef mek mem meo mer met mfa mfb mfd mfe mff mfm mfo mfr mft mka mkb mkd mke mkk mkm mko mkr mkt mma mmb mmd mme mmf mmk mmm mmo mmr mmt moa mob mod moe mof mok mom moo mor mot mra mrb mrd mre mrf mrk mrm mro mrr mrt mta mtb mtd mte mtf mtk mtm mto mtr mtt oaa oab oad oae oaf oak oam oao oar oat ob- oba obb obd obe obf obk obm obo obr obt oda odb odd ode odf odm odo odr odt oea oeb oed oee oef oem oeo oer oet of- ofa ofb ofd ofe off ofm ofo ofr oft oka okb okd oke okk oko okr om- oma omb omd ome omf omm omo omr omt oo- ooa oob ood oof ook oom ooo oor oot or- ora orb ord ore orf ork orm oro orr ort ot- ota otb otd ote otf otk otm oto otr ott ra- raa rab rad rae raf rak ram rao rar rat rba rbb rbd rbe rbf rbk rbm rbo rbr rbt rda rdb rdd rde rdf rdm rdo rdr rdt re- rea reb red ree ref rek rem reo rer ret rfa rfb rfd rfe rff rfk rfm rfo rfr rft rkb rke rkf rkk rkm rko rkt rma rmb rmd rme rmf rmm rmo rmr rmt roa rob rod roe rof rok rom roo ror rot rra rrb rrd rrf rrk rrm rrr rrt rta rtb rtd rte rtf rtk rtm rto rtr rtt taa tab tad tae taf tak tam tao tar tat tba tbb tbd tbe tbf tbk tbm tbo tbr tbt tda tdb tdd tde tdf tdk tdm tdo tdr tdt te- tea teb ted tee tef tek tem teo ter tet tfa tfb tfd tfe tff tfk tfm tfo tfr tft tka tkb tke tkk tkm tko tkr tkt tma tmb tmd tme tmf tmk tmm tmo tmr tmt to- toa tob tod toe tof tok tom too tor tot tra trb trd tre trf trk trm tro trr trt tta ttb ttd tte ttf ttk ttm tto ttr ttt