ddd dde ddi ddo ddp ddt ddx de- ded dee dei deo dep det dex di- did die dii dio dip dit dix dod doe doi doo dop dot dox dpd dpe dpi dpo dpp dpt dtd dte dti dto dtp dtt dtx dxd dxi dxo dxp dxt dxx ed- edd ede edi edo edp edt edx eed eee eeo eep eet eex eid eie eii eio eip eit eix eo- eod eoe eoi eoo eop eot ep- epd epe epi epo epp ept epx etd ete eti eto etp ett etx ex- exd exe exi exo exp ext exx i-d idd ide idi ido idp idt idx ie- ied iee iei iep iet iex iid iie iii iio iip iit iix io- iod ioe ioi ioo iop iot ipd ipe ipi ipo ipp ipt ipx itd ite iti ito itp itt itx ixe ixi o-i odd ode odi odo odp odt oed oee oei oeo oep oet oex oid oie oii oio oip oit oo- ood ooi ooo oop oot oox op- opd ope opi opo opp opt opx ot- otd ote oti oto otp ott ox- oxi oxo oxt oxx p-p pdd pde pdi pdo pdp pdt pdx ped pee pei peo pep pet pex pid pie pii pio pip pit pix pod poe poi poo pop pot pox ppd ppe ppi ppo ppp ppt ppx pt- ptd pte pti pto ptp ptt ptx pxe pxt t-x tdd tde tdi tdo tdp tdt tdx te- ted tee tei teo tep tet tex tid tie tii tio tip tit tix to- tod toe toi too top tot tox tpd tpe tpi tpo tpp tpt tpx ttd tte tti tto ttp ttt ttx txe txi txt xde xdi xdt xed xee xep xet xex xie xii xio xit xix xod xoi xoo xop xot xox xpd xpe xpo xpp xpt xti xtp xtx xxi xxo xxp xxx