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A 3-way alignment between the monomer F (1st row), monomer FK from the fifth instance of the non-standard HOR ABCDEFGHIJKGHIJKL (second row) and the monomer K (third row). Positions that differ in F and K are colored in red in F and in blue in K. Positions of the monomer FK are colored either in red (if they have the same nucleotide as in F) or in blue (if they have the same nucleotide as in K). Two positions in FK that differ from positions in both F and K are colored in yellow
