-er -ey a-a a-b a-c a-t aaa aab aac aad aae aar aat aay ab- aba abb abc abd abe abr abt aby ac- aca acb acc acd ace acr act acy ad- ada adb adc add ade adr adt ady aea aeb aec aed aee aer aet aey ar- ara arb arc ard are arr art ary at- ata atb atc atd ate atr att ay- aya ayc ayd aye ayr ayt baa bab bac bad bae bar bat bay bba bbb bbc bbd bbe bbr bbt bby bca bcb bcc bcd bce bcr bct bcy bda bdb bdc bdd bde bdr bdt bdy be- bea beb bec bed bee ber bet bey bra brb brd bre brr brt bry bta btb btc btd bte btr btt bty by- bya byc byd bye byr byt c-- caa cab cac cad cae car cat cay cba cbb cbc cbd cbe cbr cbt cby cca ccb ccc ccd cce ccr cct cda cdb cdc cdd cde cdr cdt cdy ce- cea ceb cec ced cee cer cet cey cra crb crc crd cre crr crt cry cta ctb ctc ctd cte ctr ctt cty cya cyb cyc cyd cye cyr cyt daa dab dac dad dae dar dat day dba dbb dbc dbd dbe dbr dbt dby dca dcb dcc dcd dce dcr dct dda ddb ddc ddd dde ddr ddt ddy de- dea deb dec ded dee der det dey dra drb drc drd dre drr drt dry dta dtb dtc dtd dte dtr dtt dty dy- dya dyb dyc dyd dye dyr dyy eaa eab eac ead eae ear eat eba ebb ebc ebd ebe ebr ebt eby ec- eca ecb ecc ecd ece ecr ect ed- eda edb edc edd ede edr edt edy eea eeb eec eed eee eer eet eey era erb erc erd ere err ert ery eta etb etc etd ete etr ett ety eya eyc eyd eye eyr eyt ra- raa rab rac rad rae rar rat ray rba rbb rbc rbd rbe rbr rbt rca rcb rcc rcd rce rcr rct rda rdb rdc rdd rde rdr rdt rdy re- rea reb rec red ree rer ret rey rra rrb rrc rrd rrr rrt rta rtb rtc rtd rte rtr rtt rty ry- rya ryc ryd rye ryr ryy taa tab tac tad tae tar tat tay tba tbb tbc tbd tbe tbr tbt tca tcb tcc tcd tce tcr tct tda tdb tdc tdd tde tdr tdt tdy te- tea teb tec ted tee ter tet tey tra trb trc trd tre trr trt try tta ttb ttc ttd tte ttr ttt tty tya tyc tyd tye tyr tyt yaa yab yac yad yae yar yat yay ybc ybe ybr yby yca ycc ycd yce ycy yda yde ydt ydy yea yeb yec yed yee yer yet yey yra yrc yre yrt yta ytc ytd yte ytr ytt yyb yyc yye yyt yyy