Dictionary

repeat itself en · VERB

To occur again (recur) in the same way or form.
- It is interesting to recall that the engine emerged from Swindon Works as County of Cheshire, but the mistake was noticed, and rectified [to County of Chester]. History repeated itself when the same thing happened to the more recent G.W.R. "County" class 4-6-0, No. 1011, which was fitted with nameplates in 1946. 1951 April, R. S. McNaught, “Railway Enthusiasts”, in Railway Magazine, number 600, page 270:

Spelling	Features	Source
repeats itself	Number=Sing, Person=3, Tense=Pres	lexicographic
repeated itself	Tense=Past, VerbForm=Part	lexicographic
repeated itself	Tense=Past	lexicographic
repeating itself	Tense=Pres, VerbForm=Part	lexicographic