SN4 ""

No	Pattern	Freq
1	[Wh pn] had [adv] been	474
2	who had [adv] be	461
3	[Wh pn] had [adv] be	374
4	[Wh pn] had [not/n't] be	101
5	[Wh pn] had not be	101
6	[Wh pn] had not be	89
7	[Wh pn] had never be	43
8	[Wh pn] had never be	43
9	[Wh pn] had previously be	41
10	[Wh pn] had previously be	41
11	[Wh pn] had also be	37
12	[Wh pn] had also be	37
13	[Wh pn] had once be	34
14	[Wh pn] had already be	34
15	[Wh pn] had already be	34
16	[Wh pn] had once be	34
17	[Wh pn] had always be	24
18	[Wh pn] had always be	24
19	[Wh pn] had just be	17
20	[Wh pn] had just be	17
21	[Wh pn] had recently be	14
22	[Wh pn] had recently be	14
23	whom had [adv] be	13
24	[Wh pn] had hitherto be	12
25	[Wh pn] had n't be	12
26	[Wh pn] had hitherto be	12
27	[Wh pn] had long be	11
28	[Wh pn] had long be	11
29	[Wh pn] had earlier be	10
30	[Wh pn] had early be	10