SN4 ""

No	Pattern	Freq
1	[conj] it have occur [prep]	10
2	[subord] it have occur [prep]	7
3	it [modal v] have occur [prep]	12
4	it [vb mod] have occur [prep]	12
5	it must have occur [prep]	5
6	it must have occur [prep]	5
7	it have [adv] occur [prep]	97
8	it have [adv] occur [prep]	53
9	it have [not/n't] occur [prep]	44
10	it have not occur [prep]	44
11	it have never occur [prep]	33
12	it have never occur [prep]	33
13	it have not occur [prep]	22
14	it have n't occur [prep]	22
15	it have occur [prep] [pron]	24
16	it have occur [prep] [pers pn]	22
17	it have occur [prep] me	8
18	it have occur [prep] i	8
19	it have occur [prep] he	8
20	it have occur [prep] him	8
21	it have occur [prep] [adj]	7
22	it have occur [prep] [art]	6
23	it have occur [prep] [art]	6
24	it have occur [prep] [det]	5