-ic a-a a-c a-i aaa aac aag aai aan aao aax ac- aca acc acg aci acn aco acx ag- aga agc agg agi agn ago agx ai- aia aic aig aii ain aio aix an- ana anc ang ani ann ano anx aoa aoc aog aoi aon aoo aox ax- axa axi axn axo axx c-- caa cac cag cai can cao cax cca ccc ccg cci ccn cco ccx cga cgc cgg cgi cgn cgo ci- cia cic cig cii cin cio cix cn- cna cnc cng cni cnn cno cnx co- coa coc cog coi con coo cox cxc cxi cxo cxx gaa gac gag gai gan gao gca gcc gcg gci gcn gco gga ggc ggg ggi ggn ggo gia gic gig gii gin gio gna gnc gni gnn gno goa goc gog goi gon goo gox gxa ia- iaa iac iag iai ian iao ica icc icg ici icn ico iga igc igg igi ign igo iia iic iii iin iio iix in- ina inc ing ini inn ino inx io- ioa ioc iog ioi ion ioo ixc ixi ixn n-i naa nac nag nai nan nao nax nca ncc ncg nci ncn nco ncx nga ngc ngg ngi ngn ngo nia nic nig nii nin nio nix nna nnc nng nni nnn nno no- noa noc nog noi non noo nox nxc o-i oaa oac oag oai oan oao oax oc- oca occ ocg oci ocn oco ocx oga ogc ogg ogi ogn ogo ogx oia oic oii oin oio on- ona onc ong oni onn ono onx oo- ooa ooc oog ooi oon ooo oox ox- oxa oxc oxi oxn oxo oxx xaa xac xag xan xci xcx xgi xia xic xii xin xio xix xna xnc xno xoa xoc xog xoi xon xoo xox xxi xxo xxx