Class 1: pAAAA, pCCCC, pGGGG, pTTTT
Class 2: pAAAC, pAAAT, pAACA, pAATA, pCCAC, pCCCA, pCCCG, pCCGC, pGGCG, pGGGC, pGGGT, pGGTG, pTTAT, pTTGT, pTTTA, pTTTG
Class 3: pAAAG, pAAGA, pCCCT, pCCTC, pGGAG, pGGGA, pTTCT, pTTTC
Class 4: pAACC, pAATT, pCCAA, pCCGG, pGGCC, pGGTT, pTTAA, pTTGG
Class 5: pAACG, pAAGC, pAAGT, pAATG, pCCAT, pCCGT, pCCTA, pCCTG, pGGAC, pGGAT, pGGCA, pGGTA, pTTAC, pTTCA, pTTCG, pTTGC
Class 6: pAACT, pAATC, pCCAG, pCCGA, pGGCT, pGGTC, pTTAG, pTTGA
Class 7: pAAGG, pCCTT, pGGAA, pTTCC
Class 8: pACAA, pACCC, pATAA, pATTT, pCAAA, pCACC, pCGCC, pCGGG, pGCCC, pGCGG, pGTGG, pGTTT, pTAAA, pTATT, pTGGG, pTGTT
Class 9: pACAC, pACCA, pATAT, pATTA, pCAAC, pCACA, pCGCG, pCGGC, pGCCG, pGCGC, pGTGT, pGTTG, pTAAT, pTATA, pTGGT, pTGTG
Class 10: pACAG, pACCT, pACGA, pACTC, pATAG, pATCT, pATGA, pATTC, pCAAG, pCACT, pCAGA, pCATC, pCGAG, pCGCT, pCGGA, pCGTC, pGCAG, pGCCT, pGCGA, pGCTC, pGTAG, pGTCT, pGTGA, pGTTC, pTAAG, pTACT, pTAGA, pTATC, pTGAG, pTGCT, pTGGA, pTGTC
Class 11: pACAT, pACCG, pACGC, pACTA, pATAC, pATCA, pATGT, pATTG, pCAAT, pCACG, pCAGC, pCATA, pCGAC, pCGCA, pCGGT, pCGTG, pGCAC, pGCCA, pGCGT, pGCTG, pGTAT, pGTCG, pGTGC, pGTTA, pTAAC, pTACA, pTAGT, pTATG, pTGAT, pTGCG, pTGGC, pTGTA
Class 12: pACGG, pACTT, pATCC, pATGG, pCAGG, pCATT, pCGAA, pCGTT, pGCAA, pGCTT, pGTAA, pGTCC, pTACC, pTAGG, pTGAA, pTGCC
Class 13: pACGT, pACTG, pATCG, pATGC, pCAGT, pCATG, pCGAT, pCGTA, pGCAT, pGCTA, pGTAC, pGTCA, pTACG, pTAGC, pTGAC, pTGCA
Class 14: pAGAA, pAGGG, pCTCC, pCTTT, pGAAA, pGAGG, pTCCC, pTCTT
Class 15: pAGAC, pAGAT, pAGCA, pAGCG, pAGGC, pAGGT, pAGTA, pAGTG, pCTAC, pCTAT, pCTCA, pCTCG, pCTGC, pCTGT, pCTTA, pCTTG, pGAAC, pGAAT, pGACA, pGACG, pGAGC, pGAGT, pGATA, pGATG, pTCAC, pTCAT, pTCCA, pTCCG, pTCGC, pTCGT, pTCTA, pTCTG
Class 16: pAGAG, pAGGA, pCTCT, pCTTC, pGAAG, pGAGA, pTCCT, pTCTC
Class 17: pAGCC, pAGTT, pCTAA, pCTGG, pGACC, pGATT, pTCAA, pTCGG
Class 18: pAGCT, pAGTC, pCTAG, pCTGA, pGACT, pGATC, pTCAG, pTCGA