SN4 ""

No	Pattern	Freq
1	[noun] is [adv] [verb] in	1745
2	[noun sg] is [adv] [verb] in	1331
3	[pron] is [adv] [verb] in	643
4	[pers pn] is [adv] [verb] in	370
5	it is [adv] [verb] in	303
6	it is [adv] [verb] in	302
7	[noun pl] is [adv] [verb] in	258
8	[Wh det] is [adv] [verb] in	233
9	[conj] is [adv] [verb] in	220
10	which is [adv] [verb] in	196
11	which is [adv] [verb] in	196
12	[adj] is [adv] [verb] in	170
13	[coord] is [adv] [verb] in	144
14	[det] is [adv] [verb] in	129
15	[noun prp] is [adv] [verb] in	127
16	and is [adv] [verb] in	125
17	and is [adv] [verb] in	125
18	fields is [adv] [verb] in	123
19	field is [adv] [verb] in	123
20	this is [adv] [verb] in	105
21	this is [adv] [verb] in	105
22	[that] is [adv] [verb] in	50
23	that is [adv] [verb] in	50
24	that is [adv] [verb] in	50
25	he is [adv] [verb] in	44
26	he is [adv] [verb] in	44
27	system is [adv] [verb] in	40
28	system is [adv] [verb] in	39
29	what is [adv] [verb] in	37
30	what is [adv] [verb] in	37