SN4 ""

No	Pattern	Freq
1	[modal v] [adv] have [been] for	8
2	[vb mod] [adv] have [been] for	8
3	could [adv] have [been] for	6
4	could [adv] have [been] for	6
5	[adv] [pron] have [been] for	20
6	[adv] [pers pn] have [been] for	20
7	[adv] it have [been] for	7
8	[adv] it have [been] for	7
9	[adv] they have [been] for	5
10	[adv] they have [been] for	5
11	[adv] have [pers pn] [been] for	7
12	[adv] have [pron] [been] for	7
13	[adv] have [been] [verb] for	92
14	[adv] have [been] [adj] for	78
15	[adv] have [been] [vb pp] for	76
16	[adv] have [been] [adj] for	70
17	[adv] have [been] [v-ing] for	14
18	[adv] have [been] responsible for	12
19	[adv] have [been] responsible for	12
20	[adv] have [been] possible for	11
21	[adv] have [been] possible for	11
22	[adv] have [been] easy for	9
23	[adv] have [been] easy for	9
24	[adv] have [been] [noun] for	8
25	[adv] have [been] used for	8
26	[adv] have [been] use for	8
27	[adv] have [been] [adj -er] for	7
28	[adv] have [been] good for	7
29	[adv] have [been] [noun sg] for	5
30	[adv] have [been] [adv] for	5