SN4 ""

No	Pattern	Freq
1	[vb mod] have been [verb] to	337
2	[vb mod] have [been] [verb] to	335
3	[vb mod] have [been] [vb pp] to	295
4	would have [been] [verb] to	89
5	may have [been] [verb] to	59
6	should have [been] [verb] to	49
7	[vb mod] have [been] [v-ing] to	38
8	might have [been] [verb] to	38
9	could have [been] [verb] to	35
10	must have [been] [verb] to	33
11	will have [been] [verb] to	24
12	[vb mod] have [been] given to	14
13	[vb mod] have [been] give to	14
14	[vb mod] have [been] sent to	12
15	[vb mod] have [been] send to	12
16	[vb mod] have [been] related to	10
17	[vb mod] have [been] relate to	10
18	[vb mod] have [been] put to	8
19	[vb mod] have [been] put to	8
20	[vb mod] have [been] refer to	8
21	[vb mod] have [been] expose to	8
22	[vb mod] have [been] exposed to	8
23	[vb mod] have [been] lose to	7
24	[vb mod] have [been] lost to	7
25	[vb mod] have [been] bring to	6
26	[vb mod] have [been] listen to	6
27	[vb mod] have [been] listening to	6
28	[vb mod] have [been] done to	5
29	[vb mod] have [been] transfer to	5
30	[vb mod] have [been] reduced to	5