-ic c-- ccc ccd cce cci ccn ccs ccx cdc cdd cde cdi cdn cds cdx ce- cec ced cee cei cen ces cex ci- cic cid cie cii cin cis cix cn- cnc cnd cne cni cnn cns cnx csc csd cse csi csn css csx cxc cxi cxs cxx dcc dcd dce dci dcn dcs dcx ddc ddd dde ddi ddn dds ddx de- dec ded dee dei den des dex di- dic did die dii din dis dix dnc dnd dne dni dnn dns dsc dsd dse dsi dsn dss dsx dxc dxd dxi dxn dxs dxx ec- ecc ecd ece eci ecn ecs ecx ed- edc edd ede edi edn eds edx eec eed eee een ees eex eic eid eie eii ein eis eix en- enc end ene eni enn ens es- esc esd ese esi esn ess esx ex- exc exd exe exi exs exx i-d icc icd ice ici icn ics idc idd ide idi idn ids idx ie- iec ied iee iei ien ies iex iic iid iie iii iin iis iix in- inc ind ine ini inn ins inx is- isc isd ise isi isn iss ixc ixe ixi ixn n-i ncc ncd nce nci ncn ncs ncx ndc ndd nde ndi ndn nds ne- nec ned nee nei nen nes nex nic nid nie nii nin nis nix nnc nne nni nnn nns nsc nsd nse nsi nsn nss nsx nxc nxd scc scd sce sci scn scs scx sdc sdd sde sdi sdn sds se- sec sed see sei sen ses sex sic sid sie sii sin sis six snc snd sne sni snn sns ss- ssc ssd sse ssi ssn sss ssx sxc sxi sxn sxs xcd xci xcx xdc xde xdi xds xed xee xen xes xex xic xie xii xin xis xix xnc xns xsc xsi xss xxi xxx