-ic a-a a-c a-i aaa aac aaf aag aai aan aao aax ac- aca acc acf acg aci acn aco acx af- afa afc aff afg afi afn afo afx ag- aga agc agf agg agi agn ago agx ai- aia aic aif aig aii ain aio aix an- ana anc anf ang ani ann ano anx aoa aoc aof aog aoi aon aoo aox ax- axa axi axn axo axx c-- caa cac caf cag cai can cao cax cca ccc ccf ccg cci ccn cco ccx cfa cfc cff cfg cfi cfn cfo cfx cga cgc cgg cgi cgn cgo ci- cia cic cif cig cii cin cio cix cn- cna cnc cnf cng cni cnn cno cnx co- coa coc cof cog coi con coo cox cxc cxf cxi cxo cxx faa fac faf fag fai fan fao fax fca fcc fcf fcg fci fcn fco fcx ffa ffc fff ffg ffi ffn ffo ffx fga fgc fgf fgg fgi fgn fia fic fif fig fii fin fix fna fnc fnf fng fni fnn fnx foa foc fof fog foi fon foo fox fxg fxi fxx gaa gac gaf gag gai gan gao gca gcc gcf gcg gci gcn gco gfa gfc gff gfi gfo gfx gga ggc ggg ggi ggn ggo gia gic gif gig gii gin gio gna gnc gnf gni gnn gno goa goc gof gog goi gon goo gox gxa gxf i-f ia- iaa iac iaf iag iai ian iao ica icc icf icg ici icn ico ifa ifc iff ifg ifi ifn ifo ifx iga igc igf igg igi ign igo iia iic iif iii iin iio iix in- ina inc inf ing ini inn ino inx io- ioa ioc iof iog ioi ion ioo ixc ixi ixn n-i naa nac naf nag nai nan nao nax nca ncc ncf ncg nci ncn nco ncx nfa nfc nff nfi nfn nfo nga ngc ngf ngg ngi ngn ngo nia nic nif nig nii nin nio nix nna nnc nnf nng nni nnn nno no- noa noc nof nog noi non noo nox nxc o-i oaa oac oaf oag oai oan oao oax oc- oca occ ocf ocg oci ocn oco ocx of- ofa ofc off ofg ofi ofn ofo ofx oga ogc ogf ogg ogi ogn ogo ogx oia oic oif oii oin oio on- ona onc onf ong oni onn ono onx oo- ooa ooc oof oog ooi oon ooo oox ox- oxa oxc oxf oxi oxn oxo oxx xaa xac xaf xag xan xcf xci xcx xfa xfn xfx xgi xia xic xii xin xio xix xna xnc xno xoa xoc xof xog xoi xon xoo xox xxi xxo xxx