SN4 ""

No	Pattern	Freq
1	had [verb] [verb] in	347
2	had [vb pp] [verb] in	339
3	had [verb] [to-vb] in	221
4	had [verb] [vb pp] in	71
5	had [verb] [v-ing] in	43
6	had begin [verb] in	40
7	had begun [verb] in	40
8	had become [verb] in	36
9	had become [verb] in	36
10	had [verb] live in	18
11	had come [verb] in	16
12	had come [verb] in	16
13	had fail [verb] in	16
14	had failed [verb] in	16
15	had [verb] to live in	16
16	had start [verb] in	14
17	had choose [verb] in	14
18	had chosen [verb] in	14
19	had get [verb] in	13
20	had started [verb] in	13
21	had got [verb] in	12
22	had [verb] do in	12
23	had [verb] participate in	12
24	had [verb] to participate in	11
25	had go [verb] in	11
26	had seen [verb] in	10
27	had [verb] to do in	10
28	had see [verb] in	10
29	had gone [verb] in	10
30	had agree [verb] in	10