Csci 430 introduction to Operating system please help thank you

Problem #1 Consider a concurrent program with two processes. p and q. defined as follows. A, B, C, D, and E are arbitrary atomic (indivisible) statements. Assume that the main program (not shown) does a parbegin of the two processes. void p). { void qo { D: B: } } Questions Show all the possible interleavings of the execution of the proceeding two processes. Show this by giving execution 'traces" in terms of the atomic statements e.g. 1.B.C.D.E. Remember that pO or qo can be chosen to run first, and that a running program can be interrupted in between the execution of any of the atomie statements