SN4 ""

No	Pattern	Freq
1	[noun] who have been at	27
2	[noun pl] who have been at	11
3	[noun sg] who have been at	10
4	who have [adv] been at	5
5	who have [adv] been at	5
6	who have been [verb] at	49
7	who have been [vb pp] at	35
8	who have been [v-ing] at	14
9	who have been [adj] at	9
10	who have been [adj] at	6
11	who have been look at	5
12	who have been educated at	5
13	who have been educate at	5
14	who have been looking at	5
15	who have been at [art]	36
16	who have been at [art]	36
17	who have been at the	34
18	who have been at the	34
19	who have been at [noun]	27
20	who have been at [noun prp]	20
21	who have been at [pron]	7
22	who have been at [noun sg]	5