-ey -ic c-- ccc ccd cce cci cck cdc cdd cde cdi cdk cdy ce- cec ced cee cei cek cey ci- cic cid cie cii cik ckc ckd cki cky cyc cyd cye cyk dcc dcd dce dci dck ddc ddd dde ddi ddk ddy de- dec ded dee dei dek dey di- dic did die dii dik diy dkc dke dki dkk dy- dyc dyd dye dyk dyy ec- ecc ecd ece eci eck ed- edc edd ede edi edk edy eec eed eee eek eey eic eid eie eii eik ekc ekd eke eki eky eyc eyd eye i-d icc icd ice ici ick icy idc idd ide idi idk idy ie- iec ied iee iei iek iey iic iid iie iii ikc ike iki ikk iyc iye iyy kcc kcd kce kci kck kdc kde kdk kdy ke- kec ked kee kei kek key kic kid kie kii kik kkc kke kki kkk kky kyc kyd kye ycc ycd yce yci ycy yde ydy yec yed yee yei yek yey yid yie yii yki ykk yyc yye yyy