Three processes P1, P2 and P3 with related information are given in the following table: Process Burst Time (ms) Arrival Time (ms) P1 50 0 P2 T 30 P3 40 60 T is a positive integer (T>0). Please use a preemptive shortest job first scheduling algorithm to make Gantt charts, and calculate different waiting times of three processes for different cases. Please write a professional perfect solution with sufficient details.

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