SN4 ""

No	Pattern	Freq
1	that had been [verb] [prep]	519
2	that had be [verb] [prep]	519
3	that had be [vb pp] [prep]	461
4	that had be [verb] by	96
5	that had be [verb] in	95
6	that had be [verb] to	73
7	that had be [v-ing] [prep]	57
8	that had be [verb] for	45
9	that had be [verb] on	32
10	that had be make [prep]	28
11	that had be made [prep]	28
12	that had be [verb] into	26
13	that had be [verb] with	25
14	that had be [verb] from	23
15	that had be [verb] at	18
16	that had be use [prep]	12
17	that had be give [prep]	12
18	that had be used [prep]	12
19	that had be given [prep]	11
20	that had be [verb] against	10
21	that had be do [prep]	9
22	that had be done [prep]	9
23	that had be leave [prep]	7
24	that had be left [prep]	7
25	that had be [verb] between	7
26	that had be [verb] since	7
27	that had be growing [prep]	6
28	that had be put [prep]	6
29	that had be put [prep]	6
30	that had be said [prep]	6