SN4 ""

No	Pattern	Freq
1	had [adv] had	618
2	had never have	134
3	had always have	74
4	had ever have	71
5	had already have	62
6	had just have	50
7	had only have	26
8	had also have	23
9	had once have	19
10	had previously have	15
11	had recently have	15
12	had better have	10
13	had [adv] have	10
14	had long have	8
15	had all have	7
16	had probably have	6
17	had simply have	6
18	had obviously have	6
19	had even have	6
20	had originally have	5
21	had barely have	5
22	had often have	5
23	had hardly have	5