aaaa aaac aaad aaap aaca aacc aacd aacp aact aada aadc aadt aapa aapc aapt aata aatc aatt ac-t acaa acac acad acap acat acca accc accd accp acct acda acdc acdp acdt acpa acpd acpt acta actc actt adaa adac adad adap adat adcc adda addc addd adp- adta apac apap apat apca apcc apcd apda apdd appa appc appd appt apta aptc aptt at-t ataa atac atad atap atat atca atcc atdt atta attp c-cd caaa caac caap caat cac- caca cacc cada cadc cadd capa capc capd capp capt cat- cata catc catd catt ccaa ccac ccad ccap ccat ccca cccc cccp ccdc ccdp ccpa ccpp cctc cctt cdaa cdac cdad cdda cpaa cpac cpad cpap cpca cppa cppd cptp ctca ctcp ctpp ctta daad daap daca dact dada dapa dapp data datp datt dcca dccc dccp dcct dctc dddd dpaa dpac dpcp dpdt dppa dppc dtaa dtac dtap dtcc dtdp dttp paap paat paca pacd pact pada padd papa papp pata patd patt pcaa pcad pcap pcca pccc pcpp pdac pdca pdcp pdpa pdtc ppac ppad ppap ppcc ppcd pppa pppd pppp ppta pptt ptca ptcc ptdc ptpd pttc taa- taat taca tacc tact tada tapa tapp tapt tata tatt tcad tcap tcca tccc tcdd tcpa tctc tdac tdap tpac tpap tpcd tpcp tppa tppd tppp tptp ttcp tttt