-ic a-a a-c a-i aaa aac aai aan aao aas aax ac- aca acc aci acn aco acs acx ai- aia aic aii ain aio ais aix an- ana anc ani ann ano ans anx aoa aoc aoi aon aoo aos aox as- asa asc asi asn aso ass asx ax- axa axi axn axo axs axx c-- caa cac cai can cao cas cax cca ccc cci ccn cco ccs ccx ci- cia cic cii cin cio cis cix cn- cna cnc cni cnn cno cns cnx co- coa coc coi con coo cos cox csa csc csi csn cso css csx cxc cxi cxo cxs cxx ia- iaa iac iai ian iao ias ica icc ici icn ico ics iia iic iii iin iio iis iix in- ina inc ini inn ino ins inx io- ioa ioc ioi ion ioo ios is- isa isc isi isn iso iss ixc ixi ixn n-i naa nac nai nan nao nas nax nca ncc nci ncn nco ncs ncx nia nic nii nin nio nis nix nna nnc nni nnn nno nns no- noa noc noi non noo nos nox nsa nsc nsi nsn nso nss nsx nxc o-i oaa oac oai oan oao oas oax oc- oca occ oci ocn oco ocs ocx oia oic oii oin oio ois on- ona onc oni onn ono ons onx oo- ooa ooc ooi oon ooo oos oox os- osa osc osi osn oso oss osx ox- oxa oxc oxi oxn oxo oxx saa sac sai san sao sas sax sca scc sci scn sco scs scx sia sic sii sin sio sis six sna snc sni snn sno sns soa soc soi son soo sos sox ss- ssa ssc ssi ssn sso sss ssx sxc sxi sxn sxs xaa xac xan xas xci xcx xia xic xii xin xio xis xix xna xnc xno xns xoa xoc xoi xon xoo xos xox xsa xsc xsi xss xxi xxo xxx