SN4 ""

No	Pattern	Freq
1	[pers pn] is [adv] [subord]	389
2	it is [adv] [subord]	367
3	it is [adv] [subord]	365
4	[pron] is [adv] because	178
5	[pron] is [adv] than	155
6	[pron] is more [subord]	125
7	there is [adv] [subord]	103
8	[ex0] is [adv] [subord]	103
9	there is [adv] [subord]	103
10	[pron] is only [subord]	101
11	[pron] is [adv] if	62
12	[pron] is [adv] as	59
13	[pron] is precisely [subord]	53
14	[Wh det] is [adv] [subord]	40
15	which is [adv] [subord]	38
16	which is [adv] [subord]	38
17	[pron] is [adv] when	37
18	[pron] is less [subord]	23
19	[pron] is best [subord]	23
20	[pron] is also [subord]	22
21	[pron] is just [subord]	21
22	[pron] is partly [subord]	13
23	[pron] is perhaps [subord]	13
24	[pron] is probably [subord]	12
25	[pron] is now [subord]	11
26	she is [adv] [subord]	10
27	[pron] is almost [subord]	10
28	she is [adv] [subord]	10
29	[pron] is [adv] after	10
30	he is [adv] [subord]	9