SN4 ""

No	Pattern	Freq
1	what [pers pn] had [vb pp]	1342
2	what he had [verb]	622
3	what she had [verb]	409
4	what [pers pn] had do	361
5	what [pers pn] had done	258
6	what [pers pn] had [to-vb]	257
7	what they had [verb]	247
8	what [pers pn] had say	243
9	what i had [verb]	188
10	what [pers pn] had said	151
11	what [pers pn] had see	143
12	what [pers pn] had seen	142
13	what [pers pn] had to do	102
14	what [pers pn] had to say	92
15	what we had [verb]	69
16	what [pers pn] had learn	53
17	what it had [verb]	44
18	what [pers pn] had hear	38
19	what [pers pn] had heard	38
20	what [pers pn] had expect	38
21	what [pers pn] had tell	37
22	what [pers pn] had expected	36
23	what [pers pn] had write	34
24	what [pers pn] had written	33
25	what [pers pn] had come	32
26	what [pers pn] had come	32
27	what [pers pn] had told	32
28	what [pers pn] had learned	30
29	what [pers pn] had want	25
30	what [pers pn] had find	25