SN4 ""

No	Pattern	Freq
1	it have [adv] [vb pp]	1884
2	it has [adv] [verb]	1020
3	it had [adv] [verb]	712
4	it 's [adv] [verb]	318
5	it have also [verb]	288
6	it have just [verb]	206
7	it have never [verb]	187
8	it have already [verb]	161
9	it have [adv] get	140
10	it have [adv] got	139
11	it have all [verb]	130
12	it have [adv] [vb base]	112
13	it have [adv] happen	111
14	it have [adv] happened	111
15	it have now [verb]	108
16	it have [adv] become	96
17	it have [adv] become	96
18	it have [adv] go	85
19	it have [adv] gone	80
20	it have always [verb]	80
21	it have only [verb]	57
22	it have [adv] occur	55
23	it have [adv] occurred	55
24	it have [adv] come	51
25	it have [adv] have	49
26	it have [adv] had	48
27	it have [adv] come	47
28	it have [adv] [to-vb]	45
29	it have recently [verb]	44
30	it have [adv] do	38