SN4 ""

No	Pattern	Freq
1	has [adv] been [adj]	650
2	has [not/n't] been [adj]	365
3	has not been [adj]	363
4	has not been [adj]	272
5	has always been [adj]	189
6	has always been [adj]	189
7	has [adv] been able	130
8	has n't been [adj]	91
9	has never been [adj]	89
10	has also been [adj]	89
11	has also been [adj]	89
12	has never been [adj]	89
13	has [adv] been possible	68
14	has [adv] been easy	43
15	has long been [adj]	32
16	has long been [adj]	32
17	has [adv] been involved	31
18	has only been [adj]	24
19	has only been [adj]	24
20	has often been [adj]	21
21	has often been [adj]	21
22	has ever been [adj]	20
23	has ever been [adj]	20
24	has [adv] been clear	16
25	has [adv] been necessary	14
26	has already been [adj]	14
27	has already been [adj]	14
28	has [adv] been available	14
29	has [adv] been good	14
30	has [adv] been concerned	14