SN4 ""

No	Pattern	Freq
1	[noun] who have had [adj] [noun]	54
2	[noun pl] who have had [adj] [noun]	34
3	[noun] who have had [adj] [noun pl]	27
4	[noun] who have had [adj] [noun sg]	27
5	[noun] who had had [adj] [noun]	21
6	[noun] who have had [adj] [noun]	19
7	[noun sg] who have had [adj] [noun]	12
8	patient who have had [adj] [noun]	12
9	patients who have had [adj] [noun]	11
10	[noun] who have had [adj] experience	10
11	[n mass] who have had [adj] [noun]	7
12	people who have had [adj] [noun]	7
13	people who have had [adj] [noun]	7
14	[noun] who 've had [adj] [noun]	7
15	[noun] who has had [adj] [noun]	6
16	[noun] who have had [adj] experience	6
17	woman who have had [adj] [noun]	5