Consider four processes P1, P2, P3 and P4 are present in a system. They use a resource which has 12 instances in total. Process P1, P2 , P3 and P4 are currently holding 1, 5, 2 and 2 instances of the resource respectively. However, maximum need for the resources for P1 is 5, for P2 is 13, for P3 is 8 and for P4 is 4. Is the system in safe state? If yes, find the safe sequence of the processes.

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