[MustKnowHistory]

Look at the endings of words.

[nikos1121]

Is there a mistake?

[Lonesome in Massachussets]

Look at the endings of words.

Good hint. Had a meeting WFH this morning, so I am a little late reporting in here. Guessed TFF and then took a stab at the last four letters of DPGETCSWR, and it cracked right open.

[grey_whiskers]

2 min. Get the first word after the semicolon (look at its last two letters) and then the endings of words 1 and 2. That opens up a repeated two-letter word.
Go from there.