ddd dde ddi ddo ddx de- ded dee dei deo dex di- did die dii dio dix dod doe doi doo dox dxd dxi dxo dxx ed- edd ede edi edo edx eed eee eeo eex eid eie eii eio eix eo- eod eoe eoi eoo ex- exd exe exi exo exx i-d idd ide idi ido idx ie- ied iee iei iex iid iie iii iio iix io- iod ioe ioi ioo ixe ixi o-i odd ode odi odo oed oee oei oeo oex oid oie oii oio oo- ood ooi ooo oox ox- oxi oxo oxx xde xdi xed xee xex xie xii xio xix xod xoi xoo xox xxi xxo xxx