SN4 ""

No	Pattern	Freq
1	have been [verb] [adv] for	37
2	have been [verb] [adv prt] for	19
3	have been [verb] [adv] for	18
4	have been [verb] [conj] for	13
5	have been [verb] [subord] for	11
6	have been [verb] but for	11
7	have been [verb] but for	10
8	have been [verb] [pron] for	9
9	have been [verb] [verb] for	9
10	have been [verb] [noun] for	9
11	have been [verb] [adj] for	8
12	have been [verb] [to-vb] for	7
13	have been [verb] up for	6
14	have been [verb] up for	6
15	have been [verb] [pers pn] for	6
16	have been [verb] [adj] for	6
17	have been [verb] [noun pl] for	5
18	[vb mod] have been [verb] for	286
19	[modal v] have been [verb] for	286
20	would have been [verb] for	73
21	would have been [verb] for	70
22	could have been [verb] for	67
23	could have been [verb] for	67
24	[adv] have been [verb] for	61
25	[adv] have been [verb] for	46
26	might have been [verb] for	37
27	might have been [verb] for	37
28	must have been [verb] for	36
29	must have been [verb] for	36
30	may have been [verb] for	30