SN4 ""

No	Pattern	Freq
31	[prep] [Wh det] is [adv]	930
32	[prep] what is [adv]	753
33	[prep] what is [adv]	753
34	[prep] [adj] is [adv]	512
35	[prep] [pers pn] is [adv]	488
36	[prep] [det] is [adv]	284
37	[prep] it is [adv]	223
38	[prep] it is [adv]	223
39	[prep] which is [adv]	174
40	[prep] which is [adv]	174
41	[prep] [num] is [adv]	158
42	[prep] this is [adv]	154
43	[prep] this is [adv]	154
44	[prep] field is [adv]	127
45	[prep] fields is [adv]	125
46	[prep] they is [adv]	114
47	[prep] them is [adv]	114
48	[prep] [verb] is [adv]	93
49	[prep] [v-ing] is [adv]	80
50	[prep] [n mass] is [adv]	73
51	[prep] [adj] is [adv]	68
52	[prep] britain is [adv]	56
53	[prep] britain is [adv]	56
54	[prep] life is [adv]	51
55	[prep] [unc] is [adv]	51
56	[prep] [adv] is [adv]	51
57	[prep] life is [adv]	51
58	[prep] [adv] is [adv]	50
59	[prep] [no cls] is [adv]	50
60	[prep] woman is [adv]	46