SN4 ""

No	Pattern	Freq
1	[noun] who have been [prep] a	18
2	[noun sg] who have been [prep] a	13
3	[adj] who have been [prep] a	10
4	[det] who have been [prep] a	8
5	those who have been [prep] a	8
6	those who have been [prep] a	8
7	[pron] who have been [prep] a	7
8	[indef pn] who have been [prep] a	6
9	who have [adv] been [prep] a	20
10	who have not been [prep] a	10
11	who have [adv] been [prep] a	10
12	who have [not/n't] been [prep] a	10
13	who have n't been [prep] a	6
14	who have never been [prep] a	5
15	who have never been [prep] a	5
16	who have been [verb] [prep] a	126
17	who have been [vb pp] [prep] a	98
18	who have been [v-ing] [prep] a	28
19	who have been [adj] [prep] a	20
20	who have been [adj] [prep] a	18
21	who have been [adv] [prep] a	9
22	who have been involved [prep] a	7
23	who have been involved [prep] a	7
24	who have been [adv] [prep] a	5
25	who have been [prep] a [noun sg]	31
26	who have been [prep] a [noun]	31
27	who have been [prep] a [adj]	12
28	who have been [prep] a [adj]	11
29	who have been [prep] a coma	5
30	who have been [prep] a coma	5