-er -ey a-a a-b a-t aaa aab aad aae aaf aao aar aat aay ab- aba abb abd abe abf abo abr abt aby ad- ada adb add ade adf ado adr adt ady aea aeb aed aee aef aeo aer aet aey af- afa afb afd afe aff afo afr aft afy aoa aob aod aoe aof aoo aor aot ar- ara arb ard are arf aro arr art ary at- ata atb atd ate atf ato atr att ay- aya ayd aye ayf ayo ayr ayt baa bab bad bae baf bao bar bat bay bba bbb bbd bbe bbf bbo bbr bbt bby bda bdb bdd bde bdf bdo bdr bdt bdy be- bea beb bed bee bef beo ber bet bey bfa bfb bfd bfe bff bfo bfr bft bfy boa bob bod boe bof boo bor bot boy bra brb brd bre brf bro brr brt bry bta btb btd bte btf bto btr btt bty by- bya byd bye byf byo byr byt daa dab dad dae daf dao dar dat day dba dbb dbd dbe dbf dbo dbr dbt dby dda ddb ddd dde ddf ddo ddr ddt ddy de- dea deb ded dee def deo der det dey dfa dfb dfd dfe dff dfo dfr dft doa dob dod doe dof doo dor dot doy dra drb drd dre dro drr drt dry dta dtb dtd dte dtf dto dtr dtt dty dy- dya dyb dyd dye dyo dyr dyy eaa eab ead eae eaf eao ear eat eba ebb ebd ebe ebf ebo ebr ebt eby ed- eda edb edd ede edf edo edr edt edy eea eeb eed eee eef eeo eer eet eey ef- efa efb efd efe eff efo efr eft eo- eoa eob eod eoe eof eoo eor eot era erb erd ere erf ero err ert ery eta etb etd ete etf eto etr ett ety eya eyd eye eyo eyr eyt faa fab fad fae faf fao far fat fay fba fbb fbd fbe fbf fbo fbr fbt fda fdb fdd fde fdf fdo fdr fdt fea feb fed fee fef feo fer fet fey ffa ffd ffe fff ffo ffr fft ffy foa fob foe fof foo for fot foy fra frb frd fre frf fro frr frt fry fta ftb ftd fte ftf fto ftr ftt fty fy- fya fyb fye fyo oaa oab oad oae oaf oao oar oat ob- oba obb obd obe obf obo obr obt oby oda odb odd ode odf odo odr odt oea oeb oed oee oef oeo oer oet oey of- ofa ofb ofd ofe off ofo ofr oft oo- ooa oob ood oof ooo oor oot or- ora orb ord ore orf oro orr ort ory ot- ota otb otd ote otf oto otr ott oya oyd oye oyo ra- raa rab rad rae raf rao rar rat ray rba rbb rbd rbe rbf rbo rbr rbt rda rdb rdd rde rdf rdo rdr rdt rdy re- rea reb red ree ref reo rer ret rey rfa rfb rfd rfe rff rfo rfr rft roa rob rod roe rof roo ror rot roy rra rrb rrd rrf rrr rrt rta rtb rtd rte rtf rto rtr rtt rty ry- rya ryd rye ryf ryo ryr ryy taa tab tad tae taf tao tar tat tay tba tbb tbd tbe tbf tbo tbr tbt tda tdb tdd tde tdf tdo tdr tdt tdy te- tea teb ted tee tef teo ter tet tey tfa tfb tfd tfe tff tfo tfr tft to- toa tob tod toe tof too tor tot toy tra trb trd tre trf tro trr trt try tta ttb ttd tte ttf tto ttr ttt tty tya tyd tye tyf tyo tyr tyt yaa yab yad yae yaf yao yar yat yay ybe ybf ybr yby yda yde ydo ydt ydy yea yeb yed yee yef yeo yer yet yey yfa yfd yfe yff yfr yft yob yod yoe yof yoo yor yot yoy yra yre yrf yro yrt yta ytd yte ytf yto ytr ytt yyb yye yyf yyt yyy