net no.	con	type	fanout	fanin	fanin1	fanin2
1	gat	inpt	1	0	0	0
2	gat	inpt	1	0	0	0
3	gat	inpt	2	0	0	0
8	fan	from	3	0	0	0
9	fan	from	3	0	0	0
6	gat	inpt	1	0	0	0
7	gat	inpt	1	0	0	0
10	gat	nand	1	2	1	8
11	gat	nand	2	2	9	6
14	fan	from	11	0	0	0
15	fan	from	11	0	0	0
16	gat	nand	2	2	2	14
20	fan	from	16	0	0	0
21	fan	from	16	0	0	0
19	gat	nand	1	2	15	7
22	gat	nand	0	2	10	20
23	gat	nand	0	2	21	19