-ic a-a a-c a-i aaa aac aai aan aao aax ac- aca acc aci acn aco acx ai- aia aic aii ain aio aix an- ana anc ani ann ano anx aoa aoc aoi aon aoo aox ax- axa axi axn axo axx c-- caa cac cai can cao cax cca ccc cci ccn cco ccx ci- cia cic cii cin cio cix cn- cna cnc cni cnn cno cnx co- coa coc coi con coo cox cxc cxi cxo cxx ia- iaa iac iai ian iao ica icc ici icn ico iia iic iii iin iio iix in- ina inc ini inn ino inx io- ioa ioc ioi ion ioo ixc ixi ixn n-i naa nac nai nan nao nax nca ncc nci ncn nco ncx nia nic nii nin nio nix nna nnc nni nnn nno no- noa noc noi non noo nox nxc o-i oaa oac oai oan oao oax oc- oca occ oci ocn oco ocx oia oic oii oin oio on- ona onc oni onn ono onx oo- ooa ooc ooi oon ooo oox ox- oxa oxc oxi oxn oxo oxx xaa xac xan xci xcx xia xic xii xin xio xix xna xnc xno xoa xoc xoi xon xoo xox xxi xxo xxx