1	.text
2
3subtract:
4	sub	1, 2, 3
5	sub.	5, 4, 3
6	subo	1, 2, 1
7	subo.	0, 2, 1
8	subc	3, 4, 5
9	subc.	3, 4, 5
10	subco	1, 2, 3
11	subco.  5, 6, 7
12
13	e_subi		4, 5, 0x30
14	e_subic		3, 6, 0x2
15	e_subic. 	7, 8, 0x10
16
17	e_sub16i	1, 2, 0xf
18	e_sub2i.	5, 0x1
19	e_sub2is	10, 0x100
20