I suppose it should read: Planned , sought , or current = your intention, your effort, or your success in gaining an education in Gothenburg. Past simple is a finite verb; it is the main verb of a clause. A past participle (which often looks like a past simple form) cannot be used alone as a main verb; it is a non-finite form which combines with 'be' or 'have' to make passive voice and perfect aspect verbs respectively, or acts as the verb of a non-finite clause or as an adjective.
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