Question: Construct a precedence graph for the following program: S1: x := 0 S2: x := x + 1 S3: y := 2 S4: z :=

Construct a precedence graph for the following program:
S1: x := 0
S2: x := x + 1
S3: y := 2
S4: z := y
S5: x := x + 2
S6: y := x + z
S7: z := 4

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