SN4 ""

No	Pattern	Freq
1	that [pron] [modal v] have been [adj]	156
2	that [pron] [vb mod] have been [adj]	156
3	that [pron] [modal v] have been [adj]	155
4	that [pers pn] [modal v] have been [adj]	121
5	that [pron] [modal v] have been [adj]	103
6	that [pron] would have been [adj]	72
7	that [pron] would have been [adj]	69
8	that it [modal v] have been [adj]	65
9	that it [modal v] have been [adj]	65
10	that there [modal v] have been [adj]	32
11	that there [modal v] have been [adj]	32
12	that [ex0] [modal v] have been [adj]	32
13	that [pron] might have been [adj]	24
14	that [pron] might have been [adj]	24
15	that [pron] [modal v] have been [det]	23
16	that [pron] [modal v] have been [adj -er]	21
17	that [pron] must have been [adj]	21
18	that [pron] must have been [adj]	21
19	that he [modal v] have been [adj]	20
20	that he [modal v] have been [adj]	20
21	that [pron] [modal v] have been better	16
22	that [pron] [modal v] have been good	16
23	that [pron] may have been [adj]	14
24	that [pron] may have been [adj]	14
25	that [pron] could have been [adj]	13
26	that [pron] could have been [adj]	13
27	that they [modal v] have been [adj]	11
28	that [pron] should have been [adj]	11
29	that they [modal v] have been [adj]	11
30	that [pron] should have been [adj]	11