-ic a-a a-c a-i aaa aac aad aae aai aao aax ac- aca acc acd ace aci aco acx ad- ada adc add ade adi ado adx aea aec aed aee aei aeo aex ai- aia aic aid aie aii aio aix aoa aoc aod aoe aoi aoo aox ax- axa axe axi axo axx c-- caa cac cad cae cai cao cax cca ccc ccd cce cci cco ccx cda cdc cdd cde cdi cdo cdx ce- cea cec ced cee cei ceo cex ci- cia cic cid cie cii cio cix co- coa coc cod coe coi coo cox cxc cxi cxo cxx daa dac dad dae dai dao dax dca dcc dcd dce dci dco dcx dda ddc ddd dde ddi ddo ddx de- dea dec ded dee dei deo dex di- dia dic did die dii dio dix doa doc dod doe doi doo dox dxc dxd dxi dxo dxx eaa eac ead eae eai eao eax ec- eca ecc ecd ece eci eco ecx ed- eda edc edd ede edi edo edx eea eec eed eee eeo eex eia eic eid eie eii eio eix eo- eoa eoc eod eoe eoi eoo ex- exa exc exd exe exi exo exx i-d ia- iaa iac iad iae iai iao ica icc icd ice ici ico ida idc idd ide idi ido idx ie- iea iec ied iee iei iex iia iic iid iie iii iio iix io- ioa ioc iod ioe ioi ioo ixc ixe ixi o-i oaa oac oad oae oai oao oax oc- oca occ ocd oci oco ocx oda odc odd ode odi odo oea oec oed oee oei oeo oex oia oic oid oie oii oio oo- ooa ooc ood ooi ooo oox ox- oxa oxc oxi oxo oxx xaa xac xad xcd xci xcx xda xdc xde xdi xed xee xex xia xic xie xii xio xix xoa xoc xod xoi xoo xox xxi xxo xxx