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and purpura. Other examples of word pairs are shown in the table. The pair gnat and tang is an example of words that are both ROT13 reciprocals and reversals.

Variants and combinations

ROT5 is a practice similar to ROT13 that applies to numeric digits (0 to 9). ROT13 and ROT5 can be used together in the same message, sometimes called ROT18 (18 = 13 + 5) or ROT13.5.

ROT47 is a derivative of ROT13 which, in addition to

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