-er -ey a-a a-b a-i aaa aab aad aae aai aar aay ab- aba abb abd abe abi abr aby ad- ada adb add ade adi adr ady aea aeb aed aee aei aer aey ai- aia aib aid aie aii air aiy ar- ara arb ard are ari arr ary ay- aya ayd aye ayi ayr baa bab bad bae bai bar bay bba bbb bbd bbe bbi bbr bby bda bdb bdd bde bdi bdr bdy be- bea beb bed bee bei ber bey bi- bia bib bid bie bii bir biy bra brb brd bre bri brr bry by- bya byd bye byi byr daa dab dad dae dai dar day dba dbb dbd dbe dbi dbr dby dda ddb ddd dde ddi ddr ddy de- dea deb ded dee dei der dey di- dia dib did die dii dir diy dra drb drd dre dri drr dry dy- dya dyb dyd dye dyr dyy eaa eab ead eae eai ear eba ebb ebd ebe ebi ebr eby ed- eda edb edd ede edi edr edy eea eeb eed eee eer eey eia eib eid eie eii eir era erb erd ere eri err ery eya eyd eye eyr i-d ia- iaa iab iad iae iai iar iba ibb ibd ibe ibi ibr iby ida idb idd ide idi idr idy ie- iea ied iee iei ier iey iia iib iid iie iii iir ir- ira irb ird ire iri irr iry iya iye iyr iyy ra- raa rab rad rae rai rar ray rba rbb rbd rbe rbi rbr rda rdb rdd rde rdi rdr rdy re- rea reb red ree rei rer rey ria rib rid rie rii rir riy rra rrb rrd rri rrr ry- rya ryd rye ryr ryy yaa yab yad yae yai yar yay ybe ybi ybr yby yda yde ydy yea yeb yed yee yei yer yey yid yie yii yir yra yre yyb yye yyy