An acrostic in which the first, middle, and last letters of each line form hidden words.
三字母离合诗（诗中每行的起首、中间和最末字母可组成隐藏的词）
Example sentencesExamples
Lamentations 3 has 66 verses constituting a triple acrostic with the same curious transposition.
Since then, acrostic puzzles have evolved into double acrostics and triple acrostics.
I may be trying double and triple acrostics next, kind of like a crossword puzzle.
The acrostic word is usually made up of the first letters from each line but it also can also be made up of words from the middle or the end of lines: if two acrostic words appear simultaneously in the same writing it is called a double acrostic, if there are three a triple acrostic and so on
It's immediately apparent that the first, second and fourth chapters are alphabetic acrostics, with the third a triple acrostic.