SN4 ""

No	Pattern	Freq
1	it [was/were] [prep] the [noun sg]	1011
2	it was [prep] the [noun sg]	993
3	it [was/were] in the [noun sg]	309
4	it [was/were] on the [noun sg]	153
5	it [was/were] at the [noun sg]	102
6	it [was/were] like the [noun sg]	48
7	it [was/were] for the [noun sg]	44
8	it [was/were] during the [noun sg]	40
9	it [was/were] [prep] the time	38
10	it [was/were] from the [noun sg]	33
11	it [was/were] to the [noun sg]	31
12	it [was/were] [prep] the end	30
13	it [was/were] about the [noun sg]	26
14	it [was/were] with the [noun sg]	23
15	it [was/were] [prep] the beginning	20
16	it were [prep] the [noun sg]	19
17	it [was/were] worth the [noun sg]	18
18	it [was/were] [prep] the war	18
19	it [was/were] [prep] the paper	17
20	it [was/were] [prep] the tip	17
21	it [was/were] after the [noun sg]	17
22	it [was/were] against the [noun sg]	15
23	it [was/were] over the [noun sg]	15
24	it [was/were] [prep] the back	15
25	it [was/were] [prep] the middle	15
26	it [was/were] under the [noun sg]	14
27	it [was/were] by the [noun sg]	14
28	it [was/were] [prep] the past	13
29	it [was/were] through the [noun sg]	12
30	it [was/were] [prep] the basis	12