-ey a-a a-b a-i aaa aab aad aae aai aak aay ab- aba abb abd abe abi abk aby ad- ada adb add ade adi adk ady aea aeb aed aee aei aek aey ai- aia aib aid aie aii aik aiy aka akb akd ake aki akk ay- aya ayd aye ayi ayk baa bab bad bae bai bak bay bba bbb bbd bbe bbi bbk bby bda bdb bdd bde bdi bdk bdy be- bea beb bed bee bei bek bey bi- bia bib bid bie bii bik biy bka bkb bke bkk by- bya byd bye byi byk daa dab dad dae dai dak day dba dbb dbd dbe dbi dbk dby dda ddb ddd dde ddi ddk ddy de- dea deb ded dee dei dek dey di- dia dib did die dii dik diy dka dkb dke dki dkk dy- dya dyb dyd dye dyk dyy eaa eab ead eae eai eak eba ebb ebd ebe ebi ebk eby ed- eda edb edd ede edi edk edy eea eeb eed eee eek eey eia eib eid eie eii eik eka ekb ekd eke eki eky eya eyd eye i-d ia- iaa iab iad iae iai iba ibb ibd ibe ibi ibk iby ida idb idd ide idi idk idy ie- iea ied iee iei iek iey iia iib iid iie iii ika ikb ike iki ikk iya iye iyy ka- kaa kab kad kae kai kak kay kba kbb kbd kbe kbi kbk kda kdb kde kdk kdy ke- kea keb ked kee kei kek key kia kib kid kie kii kik kkb kke kki kkk kky kya kyd kye yaa yab yad yae yai yak yay ybe ybi yby yda yde ydy yea yeb yed yee yei yek yey yid yie yii yka yki ykk yyb yye yyy