-ic a-a a-c a-i aaa aac aad aae aai aan aas aax ac- aca acc acd ace aci acn acs acx ad- ada adc add ade adi adn ads adx aea aec aed aee aei aen aes aex ai- aia aic aid aie aii ain ais aix an- ana anc and ane ani ann ans anx as- asa asc asd ase asi asn ass asx ax- axa axe axi axn axs axx c-- caa cac cad cae cai can cas cax cca ccc ccd cce cci ccn ccs ccx cda cdc cdd cde cdi cdn cds cdx ce- cea cec ced cee cei cen ces cex ci- cia cic cid cie cii cin cis cix cn- cna cnc cnd cne cni cnn cns cnx csa csc csd cse csi csn css csx cxc cxi cxs cxx daa dac dad dae dai dan das dax dca dcc dcd dce dci dcn dcs dcx dda ddc ddd dde ddi ddn dds ddx de- dea dec ded dee dei den des dex di- dia dic did die dii din dis dix dna dnc dnd dne dni dnn dns dsa dsc dsd dse dsi dsn dss dsx dxc dxd dxi dxn dxs dxx eaa eac ead eae eai ean eas eax ec- eca ecc ecd ece eci ecn ecs ecx ed- eda edc edd ede edi edn eds edx eea eec eed eee een ees eex eia eic eid eie eii ein eis eix en- ena enc end ene eni enn ens es- esa esc esd ese esi esn ess esx ex- exa exc exd exe exi exs exx i-d ia- iaa iac iad iae iai ian ias ica icc icd ice ici icn ics ida idc idd ide idi idn ids idx ie- iea iec ied iee iei ien ies iex iia iic iid iie iii iin iis iix in- ina inc ind ine ini inn ins inx is- isa isc isd ise isi isn iss ixc ixe ixi ixn n-i naa nac nad nae nai nan nas nax nca ncc ncd nce nci ncn ncs ncx nda ndc ndd nde ndi ndn nds ne- nea nec ned nee nei nen nes nex nia nic nid nie nii nin nis nix nna nnc nne nni nnn nns nsa nsc nsd nse nsi nsn nss nsx nxc nxd saa sac sad sae sai san sas sax sca scc scd sce sci scn scs scx sda sdc sdd sde sdi sdn sds se- sea sec sed see sei sen ses sex sia sic sid sie sii sin sis six sna snc snd sne sni snn sns ss- ssa ssc ssd sse ssi ssn sss ssx sxc sxi sxn sxs xaa xac xad xan xas xcd xci xcx xda xdc xde xdi xds xed xee xen xes xex xia xic xie xii xin xis xix xna xnc xns xsa xsc xsi xss xxi xxx