-ic c-- ccc ccd cce cci cck ccp cdc cdd cde cdi cdk cdp ce- cec ced cee cei cek cep ci- cic cid cie cii cik cip ckc ckd cki cpc cpd cpe cpi cpk cpp dcc dcd dce dci dck dcp ddc ddd dde ddi ddk ddp de- dec ded dee dei dek dep di- dic did die dii dik dip dkc dke dki dkk dkp dpc dpd dpe dpi dpk dpp ec- ecc ecd ece eci eck ed- edc edd ede edi edk edp eec eed eee eek eep eic eid eie eii eik eip ekc ekd eke eki ekp ep- epc epd epe epi epp i-d icc icd ice ici ick icp idc idd ide idi idk idp ie- iec ied iee iei iek iep iic iid iie iii iip ikc ike iki ikk ipc ipd ipe ipi ipp kcc kcd kce kci kck kcp kdc kde kdk kdp ke- kec ked kee kei kek kep kic kid kie kii kik kip kkc kke kki kkk kkp kpc kpd kpe kpi kpk kpp p-p pcc pcd pce pci pck pcp pdc pdd pde pdi pdk pdp pec ped pee pei pek pep pic pid pie pii pik pip pkc pkd pke pki pkp ppc ppd ppe ppi ppk ppp