-er -ey a-a a-b a-t aaa aab aad aae aan aar aat aay ab- aba abb abd abe abn abr abt aby ad- ada adb add ade adn adr adt ady aea aeb aed aee aen aer aet aey an- ana anb and ane ann anr ant any ar- ara arb ard are arn arr art ary at- ata atb atd ate atn atr att ay- aya ayd aye ayn ayr ayt baa bab bad bae ban bar bat bay bba bbb bbd bbe bbn bbr bbt bby bda bdb bdd bde bdr bdt bdy be- bea beb bed bee ben ber bet bey bna bnb bnd bne bnn bnr bnt bra brb brd bre brn brr brt bry bta btb btd bte btn btr btt bty by- bya byd bye byn byr byt daa dab dad dae dan dar dat day dba dbb dbd dbe dbn dbr dbt dby dda ddb ddd dde ddn ddr ddt ddy de- dea deb ded dee den der det dey dna dnb dnd dne dnn dnr dnt dny dra drb drd dre drn drr drt dry dta dtb dtd dte dtn dtr dtt dty dy- dya dyb dyd dye dyn dyr dyy eaa eab ead eae ean ear eat eba ebb ebd ebe ebn ebr ebt eby ed- eda edb edd ede edn edr edt edy eea eeb eed eee een eer eet eey en- ena enb end ene enn enr ent eny era erb erd ere ern err ert ery eta etb etd ete etn etr ett ety eya eyd eye eyn eyr eyt naa nab nad nae nan nar nat nay nba nbb nbd nbe nbn nbr nbt nda ndb ndd nde ndn ndr ndt ndy ne- nea neb ned nee nen ner net ney nna nnb nne nnn nnt nra nrb nrd nre nrn nrr nrt nry nta ntb ntd nte ntn ntr ntt nya nyd nye nyn nyt nyy ra- raa rab rad rae ran rar rat ray rba rbb rbd rbe rbn rbr rbt rda rdb rdd rde rdn rdr rdt rdy re- rea reb red ree ren rer ret rey rna rnb rnd rnn rnr rnt rny rra rrb rrd rrn rrr rrt rta rtb rtd rte rtn rtr rtt rty ry- rya ryd rye ryn ryr ryy taa tab tad tae tan tar tat tay tba tbb tbd tbe tbn tbr tbt tda tdb tdd tde tdn tdr tdt tdy te- tea teb ted tee ten ter tet tey tna tnb tnd tne tnn tnr tnt tra trb trd tre trn trr trt try tta ttb ttd tte ttn ttr ttt tty tya tyd tye tyn tyr tyt yaa yab yad yae yan yar yat yay ybe ybr yby yda yde ydn ydt ydy yea yeb yed yee yen yer yet yey yna ynd yne ynn yny yra yre yrn yrt yta ytd yte ytn ytr ytt yyb yye yyt yyy