SN4 ""

No	Pattern	Freq
1	[conj] [pron] had seen	488
2	[noun] [pron] had seen	450
3	[noun sg] [pron] had seen	291
4	[subord] [pron] had seen	282
5	[pron] [pron] had seen	233
6	[Wh det] [pron] had seen	175
7	what [pron] had seen	142
8	what [pron] had seen	142
9	that [pron] had seen	137
10	that [pron] had seen	137
11	[that] [pron] had seen	137
12	[noun pl] [pron] had seen	132
13	[adv] [pron] had seen	98
14	[verb] [pron] had seen	94
15	if [pron] had seen	70
16	if [pron] had seen	70
17	[coord] [pron] had seen	69
18	[vb past] [pron] had seen	63
19	[adv] [pron] had seen	56
20	time [pron] had seen	50
21	[adj] [pron] had seen	45
22	time [pron] had seen	45
23	as [pron] had seen	41
24	as [pron] had seen	41
25	[Wh adv] [pron] had seen	39
26	and [pron] had seen	38
27	and [pron] had seen	38
28	when [pron] had seen	33
29	when [pron] had seen	33
30	[indef pn] [pron] had seen	31