aaaa aaad aaap aada aadt aapa aapt aata aatt adaa adad adap adat adda addd adp- adta apap apat apax apda apdd appa appd appt appx apta aptt aptx at-t at-x ataa atad atap atat atax atdt atta attp axat daad daap dada dapa dapp data datp datt dddd dpaa dpdt dppa dppx dtaa dtap dtdp dttp dttx dtxt dxxx paap paat pada padd papa papp pata patd patt pdpa ppad ppap pppa pppd pppp ppta pptt ptpd taa- taat tada tapa tapp tapt tata tatt tax- taxa taxt tdap tpap tppa tppd tppp tptp tttt txaa xpax xxxx