Assume at time 5, no system resources are being used except for the processor and memory. Now consider the following events:

At time 5: P1 executes a command to read from disk unit 3. At time 15: P7 executes a command to write to disk unit 3. At time 18: P4s time slice expires At time 20: P3 executes a command to read from disk unit 2. At time 24: P4 executes a command to write to disk unit 3. At time 28: P4 is swapped out. At time 33: An interrupt occurs from disk unit 2: P3s read is complete. At time 36: P8 terminates. At time 38: An interrupt occurs from disk unit 3: P1s read is complete. At time 40: An interrupt occurs from disk unit 3: P7s write is complete. At time 44: P4 is swapped back in. At time 48: An interrupt occurs from disk unit 3: P4s write is complete.

For each time 22, 37, and 47, identify which state each process is in. If a process is blocked, further identify the event on which it is blocked.