a-a a-i aaa aad aai aao aax ad- ada add adi ado adx ai- aia aid aii aio aix aoa aod aoi aoo aox ax- axa axi axo axx daa dad dai dao dax dda ddd ddi ddo ddx di- dia did dii dio dix doa dod doi doo dox dxd dxi dxo dxx i-d ia- iaa iad iai iao ida idd idi ido idx iia iid iii iio iix io- ioa iod ioi ioo ixi o-i oaa oad oai oao oax oda odd odi odo oia oid oii oio oo- ooa ood ooi ooo oox ox- oxa oxi oxo oxx xaa xad xda xdi xia xii xio xix xoa xod xoi xoo xox xxi xxo xxx