-ey -ic a-a a-b a-c a-i aaa aab aac aad aae aai aay ab- aba abb abc abd abe abi aby ac- aca acb acc acd ace aci acy ad- ada adb adc add ade adi ady aea aeb aec aed aee aei aey ai- aia aib aic aid aie aii aiy ay- aya ayc ayd aye ayi baa bab bac bad bae bai bay bba bbb bbc bbd bbe bbi bby bca bcb bcc bcd bce bci bcy bda bdb bdc bdd bde bdi bdy be- bea beb bec bed bee bei bey bi- bia bib bic bid bie bii biy by- bya byc byd bye byi c-- caa cab cac cad cae cai cay cba cbb cbc cbd cbe cbi cby cca ccb ccc ccd cce cci cda cdb cdc cdd cde cdi cdy ce- cea ceb cec ced cee cei cey ci- cia cib cic cid cie cii cya cyb cyc cyd cye daa dab dac dad dae dai day dba dbb dbc dbd dbe dbi dby dca dcb dcc dcd dce dci dda ddb ddc ddd dde ddi ddy de- dea deb dec ded dee dei dey di- dia dib dic did die dii diy dy- dya dyb dyc dyd dye dyy eaa eab eac ead eae eai eba ebb ebc ebd ebe ebi eby ec- eca ecb ecc ecd ece eci ed- eda edb edc edd ede edi edy eea eeb eec eed eee eey eia eib eic eid eie eii eya eyc eyd eye i-d ia- iaa iab iac iad iae iai iba ibb ibc ibd ibe ibi iby ica icb icc icd ice ici icy ida idb idc idd ide idi idy ie- iea iec ied iee iei iey iia iib iic iid iie iii iya iyc iye iyy yaa yab yac yad yae yai yay ybc ybe ybi yby yca ycc ycd yce yci ycy yda yde ydy yea yeb yec yed yee yei yey yid yie yii yyb yyc yye yyy