SN4 ""

No	Pattern	Freq
1	[pers pn] [vb mod] have been [adj -er]	242
2	[pers pn] [modal v] have been [adj -er]	237
3	it [modal v] have been [adj -er]	198
4	[pers pn] would have been [adj -er]	147
5	[pers pn] would have been [adj -er]	137
6	[pers pn] [modal v] have been better	126
7	[pers pn] might have been [adj -er]	46
8	[pers pn] might have been [adj -er]	46
9	[pers pn] could have been [adj -er]	35
10	[pers pn] could have been [adj -er]	35
11	[pers pn] [modal v] have been worse	26
12	[pers pn] [modal v] have been easier	25
13	i [modal v] have been [adj -er]	11
14	he [modal v] have been [adj -er]	11
15	[pers pn] 'd have been [adj -er]	10
16	[pers pn] [modal v] have been wiser	9
17	they [modal v] have been [adj -er]	7
18	[pers pn] may have been [adj -er]	6
19	[pers pn] may have been [adj -er]	6
20	[pers pn] [modal v] have been happier	6
21	[pers pn] [modal v] have been simpler	5
22	[pers pn] [modal v] 've been [adj -er]	5
23	she [modal v] have been [adj -er]	5
24	[pers pn] should have been [adj -er]	5
25	[pers pn] should have been [adj -er]	5
26	[pers pn] [modal v] have been cheaper	5
27	[pers pn] [modal v] have been quicker	5
28	you [modal v] have been [adj -er]	5