SN4 ""

No	Pattern	Freq
1	[noun] who have worked	163
2	[noun pl] who have worked	69
3	[noun sg] who have worked	63
4	[adj] who have worked	35
5	[det] who have worked	31
6	those who have worked	26
7	those who have worked	26
8	[n mass] who have worked	22
9	[pron] who have worked	19
10	people who have worked	15
11	people who have worked	15
12	[indef pn] who have worked	13
13	man who have worked	13
14	woman who have worked	10
15	[noun prp] who have worked	9
16	women who have worked	8
17	staff who have worked	7
18	men who have worked	7
19	scientist who have worked	7
20	staff who have worked	7
21	man who have worked	6
22	scientists who have worked	6
23	officer who have worked	6
24	[pers pn] who have worked	5
25	who have [adv] worked	47
26	who have [adv] worked	38
27	who have not worked	9
28	who have [not/n't] worked	9
29	who have not worked	8
30	who have previously worked	8