accidentally deleted a sequence and now i cant find it!

hi, im using cs6 premiere pro. i cut and pasted a 4 minute sequence but forgot to do the “paste” part. meanwhile i “cut” a different sequence and remembered after that i forgot to paste what i was originally working on! now i dont have that 4 minute sequence in my work. i tried to click undo but it only goes back twice. is there anyway i can find it? it took me hours to edit that 4 minute clip! thanks

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