SN4 ""

No	Pattern	Freq
1	who had [adv] [vb pp]	1557
2	who had [adv] [vb pp]	1310
3	who had not [vb pp]	247
4	who had [not/n't] [vb pp]	247
5	who had not [vb pp]	197
6	who had just [vb pp]	190
7	who had just [vb pp]	190
8	who had never [vb pp]	143
9	who had never [vb pp]	143
10	who had already [vb pp]	128
11	who had already [vb pp]	128
12	who had previously [vb pp]	82
13	who had previously [vb pp]	82
14	who had recently [vb pp]	72
15	who had recently [vb pp]	72
16	who had [adv] had	59
17	who had also [vb pp]	55
18	who had also [vb pp]	55
19	who had once [vb pp]	54
20	who had once [vb pp]	54
21	who had n't [vb pp]	50
22	who had always [vb pp]	46
23	who had earlier [vb pp]	46
24	who had always [vb pp]	46
25	who had early [vb pp]	46
26	who had [adv] come	43
27	who had [adv] taken	41
28	who had [adv] seen	31
29	who had [adv] made	27
30	who had [adv] worked	26