SN4 ""

No	Pattern	Freq
1	[noun] [prep] [Wh det] it have been	122
2	[noun sg] [prep] [Wh det] it have been	84
3	[noun pl] [prep] [Wh det] it have been	35
4	way [prep] [Wh det] it have been	16
5	way [prep] [Wh det] it have been	14
6	[adj] [prep] [Wh det] it have been	8
7	[verb] [prep] [Wh det] it have been	5
8	[prep] [Wh det] [noun] it have been	5
9	[prep] [Wh det] it [vb mod] have been	30
10	[prep] [Wh det] it [modal v] have been	30
11	[prep] [Wh det] it would have been	16
12	[prep] [Wh det] it would have been	16
13	[prep] [Wh det] it must have been	6
14	[prep] [Wh det] it must have been	6
15	[prep] [Wh det] it have [adv] been	13
16	[prep] [Wh det] it have [adv] been	11
17	[prep] [Wh det] it have been [verb]	114
18	[prep] [Wh det] it have been [vb pp]	107
19	[prep] [Wh det] it have been [prep]	17
20	[prep] [Wh det] it have been [prep]	17
21	[prep] [Wh det] it have been [adv]	12
22	[prep] [Wh det] it have been [adv]	12
23	[prep] [Wh det] it have been in	7
24	[prep] [Wh det] it have been in	7
25	[prep] [Wh det] it have been [adj]	7
26	[prep] [Wh det] it have been [v-ing]	7
27	[prep] [Wh det] it have been [adj]	6
28	[prep] [Wh det] it have been [art]	5
29	[prep] [Wh det] it have been [art]	5