SN4 ""

No	Pattern	Freq
1	have been [adv] [adj] for	323
2	have been [adv] [adj] for	303
3	have been [adv] [adj] for	105
4	has been [adv] [adj] for	73
5	had been [adv] [adj] for	71
6	have been very [adj] for	53
7	have been too [adj] for	53
8	have been very [adj] for	53
9	have been too [adj] for	53
10	have been [adv] [adj] for	36
11	have been [adv] responsible for	35
12	have been [adv] responsible for	35
13	have been so [adj] for	23
14	have been so [adj] for	23
15	have been [adv] [det] for	22
16	have been [adv] much for	21
17	have been [adv] much for	21
18	have been more [adj] for	19
19	have been more [adj] for	19
20	's been [adv] [adj] for	17
21	have been [adv] difficult for	17
22	have been [adv] difficult for	17
23	have been largely [adj] for	13
24	have been largely [adj] for	13
25	have been [adv] easy for	12
26	have been quite [adj] for	11
27	have been [adv] easy for	11
28	to have been [adv] [adj] for	11
29	have been quite [adj] for	11
30	've been [adv] [adj] for	10