aaaa aaac aaam aaca aacc aacm aact aama aamc aata aatc aatt ac-t acaa acac acat acca accc accm acct acma acmc acta actc actt amaa amac amam amat amca amcc amm- amma amta amtc at-t ataa atac atat atca atcc atm- atma atta caaa caac caam caat cac- caca cacc cacm cama camc camm camt cat- cata catc catm catt ccaa ccac ccam ccat ccca cccc cccm ccma ccmc ccmm cctc cctt cmaa cmac cmcc cmmc cmta cmtc ctca ctma ctta maaa maac maam maat mac- maca macc mact mama mamc mata matc matt mcaa mcac mcat mcca mccc mcmc mcmt mctc mmaa mmac mmcc mmcm mmct mmmc mmmm mtaa mtac taa- taat taca tacc tact tama tamc tamm tata tatt tcam tcca tccc tctc tmaa tmac tmca tmcc tmcm tmtt ttma tttt