Hierarchy	Input	Constant Input	Unused Input	Floating Input	Output	Constant Output	Unused Output	Floating Output	Bidir	Constant Bidir	Unused Bidir	Input only Bidir	Output only Bidir
u4	43	0	1	0	84	0	0	0	42	0	0	0	0
u3	3	0	0	0	48	0	0	0	0	0	0	0	0
u2	23	0	0	0	5	0	0	0	0	0	0	0	0
u1	42	9	0	9	57	9	9	9	32	0	0	0	0