SN4 ""

No	Pattern	Freq
1	have been [adv] [adj] for	297
2	have been [adv] [adj] for	97
3	[vb infin] been [adv] [adj] for	97
4	[vb -s] been [adv] [adj] for	85
5	has been [adv] [adj] for	70
6	[vb past] been [adv] [adj] for	61
7	had been [adv] [adj] for	57
8	[verb] been very [adj] for	52
9	[vb base] been [adv] [adj] for	42
10	[verb] been [adv] responsible for	35
11	have been [adv] [adj] for	33
12	[verb] been too [adj] for	32
13	[verb] been so [adj] for	23
14	[verb] been more [adj] for	19
15	[verb] been [adv] difficult for	17
16	's been [adv] [adj] for	15
17	[verb] been largely [adj] for	13
18	[verb] been quite [adj] for	11
19	[verb] been [adv] easy for	11
20	to have been [adv] [adj] for	10
21	[to-vb] been [adv] [adj] for	10
22	[verb] been [adv] good for	10
23	've been [adv] [adj] for	9
24	[verb] been particularly [adj] for	9
25	[verb] been as [adj] for	8
26	[verb] been [adv] important for	8
27	[verb] been relatively [adj] for	7
28	[verb] been [adv] impossible for	7
29	[verb] been almost [adj] for	7
30	[verb] been pretty [adj] for	6