SN4 ""

No	Pattern	Freq
1	[noun] have been as	77
2	[modal v] have been as	60
3	[vb mod] have been as	60
4	[pron] have been as	50
5	[noun sg] have been as	44
6	[pers pn] have been as	38
7	[adv] have been as	28
8	would have been as	18
9	[noun prp] have been as	18
10	[not/n't] have been as	16
11	[verb] have been as	16
12	not have been as	16
13	may have been as	15
14	not have been as	15
15	may have been as	15
16	[noun pl] have been as	14
17	would have been as	13
18	she have been as	12
19	she have been as	12
20	[adj] have been as	11
21	[adv] have been as	11
22	must have been as	10
23	he have been as	10
24	must have been as	10
25	he have been as	10
26	seem have been as	8
27	it have been as	6
28	might have been as	6
29	[vb -s] have been as	6
30	might have been as	6