digraph g {
	"f()" [shape=box, rank=min];
		// Rank adjustment
		{ rank = same; "int a = 1"; "while (a > 0)"; }
		{ rank = same; "print(a)"; "a++"; }
		{ rank = max; "a++"; "print(a)"; }
		// Control flow
		"f()" -> "int a = 1" [style=bold];
		"f()" -> "while (a > 0)" [style=bold];
		"while (a > 0)" -> "if (a > 10)" [style=bold];
		"if (a > 10)" -> "break" [style=bold];
		"break" -> "print(a)" [style=bold];
		"break" -> "a++" [style=bold];
		"break" -> "while (a > 0)" [style=bold];
		// Data flow
		"int a = 1" -> "while (a > 0)" [color=red];
		"int a = 1" -> "if (a > 10)" [color=red];
		"int a = 1" -> "print(a)" [color=red];
		"a++" -> "a++" -> "while (a > 0)" [color=red];
		"a++" -> "if (a > 10)" [color=red];
		"a++" -> "print(a)" [color=red];
	}