-ic a-a a-c a-i a-t aaa aac aai aan aao aat aax ac- aca acc aci acn aco act acx ai- aia aic aii ain aio ait aix an- ana anc ani ann ano ant anx aoa aoc aoi aon aoo aot aox at- ata atc ati atn ato att atx ax- axa axi axn axo axt axx c-- caa cac cai can cao cat cax cca ccc cci ccn cco cct ccx ci- cia cic cii cin cio cit cix cn- cna cnc cni cnn cno cnt cnx co- coa coc coi con coo cot cox cta ctc cti ctn cto ctt ctx cxc cxi cxo cxt cxx ia- iaa iac iai ian iao iat ica icc ici icn ico ict iia iic iii iin iio iit iix in- ina inc ini inn ino int inx io- ioa ioc ioi ion ioo iot ita itc iti itn ito itt itx ixc ixi ixn n-i naa nac nai nan nao nat nax nca ncc nci ncn nco nct ncx nia nic nii nin nio nit nix nna nnc nni nnn nno nnt no- noa noc noi non noo not nox nta ntc nti ntn nto ntt ntx nxc nxt o-i oaa oac oai oan oao oat oax oc- oca occ oci ocn oco oct ocx oia oic oii oin oio oit on- ona onc oni onn ono ont onx oo- ooa ooc ooi oon ooo oot oox ot- ota otc oti otn oto ott ox- oxa oxc oxi oxn oxo oxt oxx t-x taa tac tai tan tao tat tax tca tcc tci tcn tco tct tcx tia tic tii tin tio tit tix tna tnc tni tnn tno tnt tnx to- toa toc toi ton too tot tox tta ttc tti ttn tto ttt ttx txi txn txt xaa xac xan xat xci xcx xia xic xii xin xio xit xix xna xnc xno xoa xoc xoi xon xoo xot xox xtc xti xtx xxi xxo xxx