Class 0: qAAAC, qAAAG, qAAAT, qAACA, qAACG, qAACT, qAAGA, qAAGC, qAAGT, qAATA, qAATC, qAATG, qACAA, qACAG, qACAT, qACCC, qACCG, qACCT, qACGA, qACGC, qACGG, qACTA, qACTC, qACTT, qAGAA, qAGAC, qAGAT, qAGCA, qAGCC, qAGCG, qAGGC, qAGGG, qAGGT, qAGTA, qAGTG, qAGTT, qATAA, qATAC, qATAG, qATCA, qATCC, qATCT, qATGA, qATGG, qATGT, qATTC, qATTG, qATTT, qCAAA, qCAAG, qCAAT, qCACC, qCACG, qCACT, qCAGA, qCAGC, qCAGG, qCATA, qCATC, qCATT, qCCAC, qCCAG, qCCAT, qCCCA, qCCCG, qCCCT, qCCGA, qCCGC, qCCGT, qCCTA, qCCTC, qCCTG, qCGAA, qCGAC, qCGAG, qCGCA, qCGCC, qCGCT, qCGGA, qCGGG, qCGGT, qCGTC, qCGTG, qCGTT, qCTAA, qCTAC, qCTAT, qCTCA, qCTCC, qCTCG, qCTGC, qCTGG, qCTGT, qCTTA, qCTTG, qCTTT, qGAAA, qGAAC, qGAAT, qGACA, qGACC, qGACG, qGAGC, qGAGG, qGAGT, qGATA, qGATG, qGATT, qGCAA, qGCAC, qGCAG, qGCCA, qGCCC, qGCCT, qGCGA, qGCGG, qGCGT, qGCTC, qGCTG, qGCTT, qGGAC, qGGAG, qGGAT, qGGCA, qGGCG, qGGCT, qGGGA, qGGGC, qGGGT, qGGTA, qGGTC, qGGTG, qGTAA, qGTAG, qGTAT, qGTCC, qGTCG, qGTCT, qGTGA, qGTGC, qGTGG, qGTTA, qGTTC, qGTTT, qTAAA, qTAAC, qTAAG, qTACA, qTACC, qTACT, qTAGA, qTAGG, qTAGT, qTATC, qTATG, qTATT, qTCAA, qTCAC, qTCAT, qTCCA, qTCCC, qTCCG, qTCGC, qTCGG, qTCGT, qTCTA, qTCTG, qTCTT, qTGAA, qTGAG, qTGAT, qTGCC, qTGCG, qTGCT, qTGGA, qTGGC, qTGGG, qTGTA, qTGTC, qTGTT, qTTAC, qTTAG, qTTAT, qTTCA, qTTCG, qTTCT, qTTGA, qTTGC, qTTGT, qTTTA, qTTTC, qTTTG
Class 1: qAAAA
Class 2: qAACC, qACAC, qACCA
Class 3: qAAGG, qAGAG, qAGGA
Class 4: qAATT, qATAT, qATTA
Class 5: qACGT, qACTG, qAGCT, qAGTC, qATCG, qATGC
Class 6: qCAAC, qCACA, qCCAA
Class 7: qCAGT, qCATG, qCGAT, qCGTA, qCTAG, qCTGA
Class 8: qCCCC
Class 9: qCCGG, qCGCG, qCGGC
Class 10: qCCTT, qCTCT, qCTTC
Class 11: qGAAG, qGAGA, qGGAA
Class 12: qGACT, qGATC, qGCAT, qGCTA, qGTAC, qGTCA
Class 13: qGCCG, qGCGC, qGGCC
Class 14: qGGGG
Class 15: qGGTT, qGTGT, qGTTG
Class 16: qTAAT, qTATA, qTTAA
Class 17: qTACG, qTAGC, qTCAG, qTCGA, qTGAC, qTGCA
Class 18: qTCCT, qTCTC, qTTCC
Class 19: qTGGT, qTGTG, qTTGG
Class 20: qTTTT