c-- ccc ccd cce cck ccl ccu cdc cdd cde cdk cdl cdu ce- cec ced cee cek cel ceu ckc ckd cl- clc cld cle clk cll clu cuc cud cue cuk cul cuu dcc dcd dce dck dcl dcu ddc ddd dde ddk ddl ddu de- dec ded dee dek del deu dkc dke dkk dkl dku dl- dlc dld dle dlk dll dlu duc dud due duk dul ec- ecc ecd ece eck ecl ecu ed- edc edd ede edk edl edu eec eed eee eek eel ekc ekd eke ekl eku elc eld ele elk ell elu eu- euc eud eue eul kcc kcd kce kck kcl kcu kdc kde kdk kdl kdu ke- kec ked kee kek kel kkc kke kkk kkl kku kl- klc kld klu kuc kud kue kuk kul kuu lcc lcd lce lck lcl lcu ldc ldd lde ldk ldl ldu lec led lee lek lel leu lkl llc lld lle llk lll llu luc lud lue luk lul luu ucc ucd uce uck ucl ucu udc udd ude udk udl udu uec ued uee uel ukc uke ukk ukl uku ulc uld ule ulk ull ulu uuc uue uuu