SN4 ""

No	Pattern	Freq
1	[conj] that had been	65
2	[coord] that had been	32
3	but that had been	32
4	but that had been	32
5	[subord] that had been	31
6	if that had been	25
7	if that had been	25
8	[prep] that had been	12
9	[prep] that had been	12
10	[verb] that had been	5
11	that [noun] had been	225
12	that [noun sg] had been	220
13	that [pron] had been	39
14	that [Wh det] had been	21
15	that which had been	19
16	that which had been	19
17	that agreement had been	13
18	that agreement had been	13
19	that time had been	12
20	that time had been	12
21	that [pers pn] had been	12
22	that had [adv] been	30
23	that had [adv] been	19
24	that had [not/n't] been	11
25	that had not been	11
26	that had not been	7
27	that had been [art]	42
28	that had been [art]	42
29	that had been [verb]	34
30	that had been [adj]	34