SN4 ""

No	Pattern	Freq
1	[subord] it have be	1972
2	[subord] it have been	1971
3	[subord] it have [been]	1971
4	[subord] it had [be]	1094
5	[subord] it has [be]	681
6	if it have [be]	519
7	as it have [be]	323
8	[subord] it 's [be]	182
9	than it have [be]	158
10	because it have [be]	144
11	after it have [be]	132
12	once it have [be]	112
13	though it have [be]	97
14	although it have [be]	82
15	where it have [be]	80
16	when it have [be]	76
17	since it have [be]	42
18	whether it have [be]	41
19	until it have [be]	33
20	unless it have [be]	24
21	before it have [be]	20
22	for it have [be]	16
23	so it have [be]	15
24	[subord] it 'd [be]	15
25	like it have [be]	14
26	while it have [be]	14
27	cos it have [be]	11
28	whilst it have [be]	6
29	whereas it have [be]	5