SN4 ""

No	Pattern	Freq
1	had [adv] been [vb pp] in	343
2	had [adv] been [verb] in	284
3	had not been [verb] in	89
4	had [not/n't] been [verb] in	89
5	had not been [verb] in	76
6	had already been [verb] in	71
7	had already been [verb] in	71
8	had also been [verb] in	33
9	had also been [verb] in	33
10	had [adv] been [v-ing] in	30
11	had [adv] been see in	18
12	had [adv] been seen in	18
13	had never been [verb] in	17
14	had never been [verb] in	17
15	had originally been [verb] in	14
16	had just been [verb] in	14
17	had just been [verb] in	14
18	had originally been [verb] in	14
19	had previously been [verb] in	13
20	had previously been [verb] in	13
21	had n't been [verb] in	13
22	had only been [verb] in	12
23	had only been [verb] in	12
24	had recently been [verb] in	11
25	had recently been [verb] in	11
26	had [adv] been make in	11
27	had [adv] been made in	11
28	had [adv] been used in	10
29	had [adv] been use in	10
30	had long been [verb] in	9