Anonymous I have found the following sentences but I do not understand of using "In" in the other ways. In the idioms you describe, "in" is almost always omitted. [difficulty / hard time / problem / trouble] V-ing (no "in") is the usual pattern.
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AnonymousI have found the following sentences but I do not understand of using "In" in the other ways.In the idioms you describe, "in" is almost always omitted.