SN4 ""

No	Pattern	Freq
1	[vb mod] [adv] have [been] [det]	112
2	[modal v] [adv] have [been] [det]	112
3	would [adv] have [been] [det]	38
4	would [adv] have [been] [det]	38
5	could [adv] have [been] [det]	25
6	could [adv] have [been] [det]	25
7	may [adv] have [been] [det]	19
8	may [adv] have [been] [det]	19
9	can [adv] have [been] [det]	12
10	must [adv] have [been] [det]	7
11	must [adv] have [been] [det]	7
12	might [adv] have [been] [det]	6
13	can [adv] have [been] [det]	6
14	might [adv] have [been] [det]	6
15	ca [adv] have [been] [det]	6
16	should [adv] have [been] [det]	5
17	should [adv] have [been] [det]	5
18	[adv] [vb mod] have [been] [det]	11
19	[adv] [modal v] have [been] [det]	11
20	[adv] would have [been] [det]	8
21	[adv] would have [been] [det]	7
22	[adv] have [been] [prep] [det]	37
23	[adv] have [been] [prep] [det]	37
24	[adv] have [been] [verb] [det]	19
25	[adv] have [been] [art] [det]	16
26	[adv] have [been] [art] [det]	16
27	[adv] have [been] [adv] [det]	14
28	[adv] have [been] [adv] [det]	14
29	[adv] have [been] the [det]	13
30	[adv] have [been] the [det]	13