SN4 ""

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