SN4 ""

No	Pattern	Freq
1	[noun] [pron] have occurred	95
2	[noun pl] [pron] have occurred	58
3	[noun sg] [pron] have occurred	37
4	[conj] [pron] have occurred	32
5	[prep] [pron] have occurred	29
6	[prep] [pron] have occurred	29
7	changes [pron] have occurred	21
8	[subord] [pron] have occurred	21
9	change [pron] have occurred	21
10	[verb] [pron] have occurred	15
11	of [pron] have occurred	12
12	of [pron] have occurred	12
13	[adv] [pron] have occurred	10
14	if [pron] have occurred	8
15	if [pron] have occurred	8
16	[coord] [pron] have occurred	7
17	[adv] [pron] have occurred	6
18	and [pron] have occurred	6
19	[pron] [pron] have occurred	6
20	and [pron] have occurred	6
21	event [pron] have occurred	5
22	events [pron] have occurred	5
23	[pron] [modal v] have occurred	37
24	[pron] [vb mod] have occurred	37
25	[pron] [adj] have occurred	11
26	[pron] may have occurred	10
27	[pron] may have occurred	10
28	[pron] would have occurred	8
29	[pron] would have occurred	8
30	[pron] [adj] have occurred	7