aaaa aaac aaap aaca aacc aacp aact aapa aapc aapt aata aatc aatt ac-t acaa acac acap acat acca accc accp acct acpa acpt acta actc actt apac apap apat apca apcc appa appc appt apta aptc aptt at-t ataa atac atap atat atca atcc atta attp caaa caac caap caat cac- caca cacc capa capc capp capt cat- cata catc catt ccaa ccac ccap ccat ccca cccc cccp ccpa ccpp cctc cctt cpaa cpac cpap cpca cppa cptp ctca ctcp ctpp ctta paap paat paca pact papa papp pata patt pcaa pcap pcca pccc pcpp ppac ppap ppcc pppa pppp ppta pptt ptca ptcc pttc taa- taat taca tacc tact tapa tapp tapt tata tatt tcap tcca tccc tcpa tctc tpac tpap tpcp tppa tppp tptp ttcp tttt