-ic c-- ccc ccd cce ccf cci cck ccl cdc cdd cde cdf cdi cdk cdl ce- cec ced cee cef cei cek cel cfc cfd cfe cff cfi cfk cfl ci- cic cid cie cif cii cik cil ckc ckd cki cl- clc cld cle clf cli clk cll dcc dcd dce dcf dci dck dcl ddc ddd dde ddf ddi ddk ddl de- dec ded dee def dei dek del dfc dfd dfe dff dfi dfk dfl di- dic did die dif dii dik dil dkc dke dki dkk dkl dl- dlc dld dle dlf dli dlk dll ec- ecc ecd ece ecf eci eck ecl ed- edc edd ede edf edi edk edl eec eed eee eef eek eel ef- efc efd efe eff efi efl eic eid eie eif eii eik eil ekc ekd eke ekf eki ekl elc eld ele elf eli elk ell fcc fcd fce fcf fci fck fcl fdc fdd fde fdf fdi fdk fdl fec fed fee fef fei fek fel ffc ffd ffe fff ffi ffk ffl fic fid fie fif fii fik fil fkc fkf fki fkk fkl flc fld fle flf fli fll i-d i-f icc icd ice icf ici ick icl idc idd ide idf idi idk idl ie- iec ied iee ief iei iek iel ifc ifd ife iff ifi ifl iic iid iie iif iii iil ikc ike ikf iki ikk ikl il- ilc ild ile ilf ili ilk ill kcc kcd kce kci kck kcl kdc kde kdf kdk kdl ke- kec ked kee kef kei kek kel kfc kfd kff kfi kic kid kie kif kii kik kil kkc kke kki kkk kkl kl- klc kld klf kli lcc lcd lce lcf lci lck lcl ldc ldd lde ldf ldi ldk ldl lec led lee lef lei lek lel lfc lfd lfe lff lfi lfk lfl lic lid lie lif lii lik lil lkl llc lld lle llf lli llk lll