SN4 ""

No	Pattern	Freq
1	[verb] [been] for	502
2	have [been] for	502
3	[adv] [been] for	390
4	not [been] for	357
5	[not/n't] [been] for	357
6	not [been] for	208
7	[vb past] [been] for	166
8	[vb -s] [been] for	163
9	had [been] for	157
10	n't [been] for	149
11	has [been] for	144
12	[vb base] [been] for	95
13	have [been] for	73
14	have [been] for	72
15	[vb infin] [been] for	72
16	[adv] [been] for	33
17	've [been] for	22
18	's [been] for	19
19	[pron] [been] for	11
20	always [been] for	10
21	always [been] for	10
22	[pers pn] [been] for	9
23	'd [been] for	9
24	having [been] for	5
25	all [been] for	5
26	all [been] for	5
27	[v-ing] [been] for	5
28	[been] [verb] for	6384
29	[been] [vb pp] for	4628
30	[been] [v-ing] for	1734