MOV	R2,#4		;R2 = 4
	MOV	R3,#2		;R3 = 2
	MOV	R4,#4		;R4 = 4
	SUBS	R5,R2,R3	;R5 = R2 - R3 (R5 = 4 - 2 = 2)
	SUBS	R5,R2,R4	;R5 = R2 - R4 (R5 = 4 - 4 = 0)