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The past tense of the verb To Be has two forms: WAS and WERE.
The term acrostic is derived from the French acrostiche from post-classical Latin acrostichis. Generally, an acrostic is a poem in which the first letter of each line is spelled vertically and the vertical word is the subject of the poem. Each line describes the subject word.
https://www.cbc.ca/kidscbc2/the-feed/do-you-know-what-an-acrostic-poem-is
https://www.familyfriendpoems.com/poems/other/acrostic/