SN4 ""

No	Pattern	Freq
1	[pers pn] is [adv] [vb pp] [subord]	87
2	it is [adv] [verb] [subord]	71
3	[pers pn] is [adv] [verb] as	53
4	he is [adv] [verb] [subord]	17
5	[pers pn] is often [verb] [subord]	15
6	[pers pn] is [adv] [verb] because	11
7	[pers pn] is [adv] [verb] when	10
8	[pers pn] is only [verb] [subord]	10
9	[pers pn] is [adv] regarded [subord]	9
10	[pers pn] is [adv] regard [subord]	9
11	[pers pn] is [adv] describe [subord]	8
12	[pers pn] is [adv] described [subord]	8
13	[pers pn] is [adv] [v-ing] [subord]	7
14	[pers pn] is [adv] [verb] if	7
15	[pers pn] is also [verb] [subord]	7
16	[pers pn] is [adv] used [subord]	6
17	she is [adv] [verb] [subord]	6
18	[pers pn] is [adv] use [subord]	6
19	[pers pn] is [adv] seen [subord]	5
20	[pers pn] is generally [verb] [subord]	5
21	[pers pn] is [adv] see [subord]	5