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Table 3 Contingency table (with margins) for DNA motifs

From: Quantifying similarity between motifs

  A C G T -
X N XA N XC N XG N XT N X
Y N YA N YC N YG N YT N Y
  N A N C N G N T N
  1. This table is used for computing columnwise scores for Pearson χ2 and for Fisher-Irwin exact test. A similar table with 20 columns is used for protein motifs.