-th ddd dde ddh ddp ddt ddx de- ded dee deh dep det dex dh- dhd dhe dhh dhp dht dpd dpe dph dpp dpt dtd dte dth dtp dtt dtx dxd dxp dxt dxx ed- edd ede edh edp edt edx eed eee eep eet eex ehd ehe ehh ehp eht ep- epd epe eph epp ept epx etd ete eth etp ett etx ex- exd exe exh exp ext exx hdd hde hdh hdp hdt hdx he- hed hee heh hep het hex hhd hhe hhh hhp hht hpd hpe hph hpp hpt htd hte hth htp htt htx hxd p-p pdd pde pdh pdp pdt pdx ped pee peh pep pet pex phd phe php pht phx ppd ppe pph ppp ppt ppx pt- ptd pte pth ptp ptt ptx pxe pxt t-x tdd tde tdh tdp tdt tdx te- ted tee teh tep tet tex th- thd the thh thp tht thx tpd tpe tph tpp tpt tpx ttd tte tth ttp ttt ttx txe txt xde xdh xdt xed xee xep xet xex xhd xhp xht xpd xpe xpp xpt xtp xtx xxp xxx