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Given the following steps necessary to insert an item into a doubly linked list, order these...

Given the following steps necessary to insert an item into a doubly linked list, order these in the order that they must be executed.
      
                              I. Set Next(newNode) to location
                              II. Set Back(location) to newNode
                              III. Set Next(Back(location)) to newNode
                              IV. Set Back(newNode) to Back(location)

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