-ic c-- ccc ccd cce cci ccn ccp ccx cdc cdd cde cdi cdn cdp cdx ce- cec ced cee cei cen cep cex ci- cic cid cie cii cin cip cix cn- cnc cnd cne cni cnn cnp cnx cpc cpd cpe cpi cpn cpp cpx cxc cxi cxp cxx dcc dcd dce dci dcn dcp dcx ddc ddd dde ddi ddn ddp ddx de- dec ded dee dei den dep dex di- dic did die dii din dip dix dnc dnd dne dni dnn dnp dpc dpd dpe dpi dpn dpp dxc dxd dxi dxn dxp dxx ec- ecc ecd ece eci ecn ecx ed- edc edd ede edi edn edp edx eec eed eee een eep eex eic eid eie eii ein eip eix en- enc end ene eni enn enp ep- epc epd epe epi epn epp epx ex- exc exd exe exi exp exx i-d icc icd ice ici icn icp idc idd ide idi idn idp idx ie- iec ied iee iei ien iep iex iic iid iie iii iin iip iix in- inc ind ine ini inn inp inx ipc ipd ipe ipi ipn ipp ipx ixc ixe ixi ixn n-i ncc ncd nce nci ncn ncp ncx ndc ndd nde ndi ndn ndp ne- nec ned nee nei nen nep nex nic nid nie nii nin nip nix nnc nne nni nnn nnp npc npd npe npi npn npp nxc nxd p-p pcc pcd pce pci pcn pcp pcx pdc pdd pde pdi pdn pdp pdx pec ped pee pei pen pep pex pic pid pie pii pin pip pix pn- pnc pnd pne pni pnn pnp pnx ppc ppd ppe ppi ppn ppp ppx pxc pxe xcd xci xcp xcx xdc xde xdi xed xee xen xep xex xic xie xii xin xix xnc xpc xpd xpe xpn xpp xxi xxp xxx