-er -ey bbb bbd bbe bbi bbk bbr bby bdb bdd bde bdi bdk bdr bdy be- beb bed bee bei bek ber bey bi- bib bid bie bii bik bir biy bkb bke bkk bkr brb brd bre bri brk brr bry by- byd bye byi byk byr dbb dbd dbe dbi dbk dbr dby ddb ddd dde ddi ddk ddr ddy de- deb ded dee dei dek der dey di- dib did die dii dik dir diy dkb dke dki dkk dkr drb drd dre dri drk drr dry dy- dyb dyd dye dyk dyr dyy ebb ebd ebe ebi ebk ebr eby ed- edb edd ede edi edk edr edy eeb eed eee eek eer eey eib eid eie eii eik eir ekb ekd eke eki ekr eky erb erd ere eri erk err ery eyd eye eyr i-d ibb ibd ibe ibi ibk ibr iby idb idd ide idi idk idr idy ie- ied iee iei iek ier iey iib iid iie iii iir ikb ike iki ikk ikr ir- irb ird ire iri irk irr iry iye iyr iyy kbb kbd kbe kbi kbk kbr kdb kde kdk kdr kdy ke- keb ked kee kei kek ker key kib kid kie kii kik kir kkb kke kki kkk kkr kky krd kri krk krr kry kyd kye kyr rbb rbd rbe rbi rbk rbr rdb rdd rde rdi rdr rdy re- reb red ree rei rek rer rey rib rid rie rii rik rir riy rkb rke rkk rky rrb rrd rri rrk rrr ry- ryd rye ryk ryr ryy ybe ybi ybr yby yde ydy yeb yed yee yei yek yer yey yid yie yii yir yki ykk yre yyb yye yyy