mdp

module one
	s1 : [0 .. 3];

	[a] s1=0 -> (s1'=1);

	[c] s1=1 -> (s1'=2);

	[d] s1=1 -> (s1'=3);
endmodule

module two
	s2 : [0 .. 2];

	[b] s2=0 -> (s2'=1);

	[c] s2=1 -> (s2'=2);
endmodule

module three
	s3 : [0 .. 1];

	[c] s3=0 -> (s3'=1);
endmodule

// (one || two || three)[(a, b, c) -> d, (c, c, a) -> a]