SN4 ""

No	Pattern	Freq
1	[vb past] [coord] had [adv]	23
2	[vb past] [conj] had [adv]	20
3	[vb past] [conj] had [not/n't]	13
4	[vb past] [conj] had not	13
5	[vb past] and had [adv]	11
6	[vb past] and had [adv]	11
7	[vb past] or had [adv]	10
8	[vb past] [that] had [adv]	10
9	[vb past] that had [adv]	10
10	[vb past] or had [adv]	10
11	[vb past] that had [adv]	10
12	had [conj] had [adv]	9
13	[vb past] [conj] had not	7
14	[vb past] [conj] had n't	6
15	[vb past] [conj] had never	6
16	[vb past] [conj] had never	6
17	knew [conj] had [adv]	6