Assertion: poem's pattern | /r/HasProperty | equidistant letter sequences
Facets:
Source sentences:
text: Using letters to hide a message, as in acrostic ciphers, was popular during the Renaissance, and could employ various methods of enciphering, such as selecting other letters than initials based on a repeating pattern (equidistant letter sequences), or even concealing the message by starting at the end of the text and working backwards.