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Maria struggled to lift the heavy box up the stairs.
Martin struggled to pay his bills, because he lost all his money on the bus.
The chick struggled to emerge from the cracked egg.
Will have struggled.
No. Struggled is a verb form (to struggle). But it cannot be a preposition.
The word for struggled in hebrew its "Ne'evak"-נאבק
The past participle of "struggle" is "struggled."