-er -ey a-a a-b a-i a-t aaa aab aad aae aai aar aat aay ab- aba abb abd abe abi abr abt aby ad- ada adb add ade adi adr adt ady aea aeb aed aee aei aer aet aey ai- aia aib aid aie aii air ait aiy ar- ara arb ard are ari arr art ary at- ata atb atd ate ati atr att ay- aya ayd aye ayi ayr ayt baa bab bad bae bai bar bat bay bba bbb bbd bbe bbi bbr bbt bby bda bdb bdd bde bdi bdr bdt bdy be- bea beb bed bee bei ber bet bey bi- bia bib bid bie bii bir bit biy bra brb brd bre bri brr brt bry bta btb btd bte bti btr btt bty by- bya byd bye byi byr byt daa dab dad dae dai dar dat day dba dbb dbd dbe dbi dbr dbt dby dda ddb ddd dde ddi ddr ddt ddy de- dea deb ded dee dei der det dey di- dia dib did die dii dir dit diy dra drb drd dre dri drr drt dry dta dtb dtd dte dti dtr dtt dty dy- dya dyb dyd dye dyr dyy eaa eab ead eae eai ear eat eba ebb ebd ebe ebi ebr ebt eby ed- eda edb edd ede edi edr edt edy eea eeb eed eee eer eet eey eia eib eid eie eii eir eit era erb erd ere eri err ert ery eta etb etd ete eti etr ett ety eya eyd eye eyr eyt i-d ia- iaa iab iad iae iai iar iat iba ibb ibd ibe ibi ibr ibt iby ida idb idd ide idi idr idt idy ie- iea ied iee iei ier iet iey iia iib iid iie iii iir iit ir- ira irb ird ire iri irr irt iry ita itb itd ite iti itt ity iya iye iyr iyt iyy ra- raa rab rad rae rai rar rat ray rba rbb rbd rbe rbi rbr rbt rda rdb rdd rde rdi rdr rdt rdy re- rea reb red ree rei rer ret rey ria rib rid rie rii rir rit riy rra rrb rrd rri rrr rrt rta rtb rtd rte rti rtr rtt rty ry- rya ryd rye ryr ryy taa tab tad tae tai tar tat tay tba tbb tbd tbe tbi tbr tbt tda tdb tdd tde tdi tdr tdt tdy te- tea teb ted tee tei ter tet tey tia tib tid tie tii tir tit tiy tra trb trd tre tri trr trt try tta ttb ttd tte tti ttr ttt tty tya tyd tye tyr tyt yaa yab yad yae yai yar yat yay ybe ybi ybr yby yda yde ydt ydy yea yeb yed yee yei yer yet yey yid yie yii yir yit yra yre yrt yta ytd yte ytr ytt yyb yye yyt yyy