SN4 ""

No	Pattern	Freq
1	[prep] [noun] is [adv]	6168
2	[prep] [noun sg] is [adv]	3665
3	[prep] [pron] is [adv]	1490
4	[prep] [noun pl] is [adv]	1320
5	[prep] [noun prp] is [adv]	1066
6	[prep] [Wh det] is [adv]	930
7	[prep] what is [adv]	753
8	[prep] what is [adv]	753
9	[prep] [adj] is [adv]	512
10	[prep] [pers pn] is [adv]	488
11	[prep] [det] is [adv]	284
12	[prep] it is [adv]	223
13	[prep] it is [adv]	223
14	[prep] which is [adv]	174
15	[prep] which is [adv]	174
16	[prep] [num] is [adv]	158
17	[prep] this is [adv]	154
18	[prep] this is [adv]	154
19	[prep] field is [adv]	127
20	[prep] fields is [adv]	125
21	[prep] they is [adv]	114
22	[prep] them is [adv]	114
23	[prep] [verb] is [adv]	93
24	[prep] [v-ing] is [adv]	80
25	[prep] [n mass] is [adv]	73
26	[prep] [adj] is [adv]	68
27	[prep] britain is [adv]	56
28	[prep] britain is [adv]	56
29	[prep] life is [adv]	51
30	[prep] [unc] is [adv]	51