SN4 ""

No	Pattern	Freq
1	[adj] [noun] have been on a	10
2	[adj] [noun] have been on a	8
3	[art] [noun] have been on a	8
4	[art] [noun] have been on a	8
5	the [noun] have been on a	6
6	the [noun] have been on a	6
7	[noun] [noun] have been on a	6
8	[noun] [pron] have been on a	11
9	[noun] who have been on a	7
10	[noun] who have been on a	7
11	[noun] [Wh pn] have been on a	7
12	[noun] [noun] have been on a	6
13	[noun] [noun sg] have been on a	5
14	[noun] have [adv] been on a	11
15	[noun] have [adv] been on a	11
16	[noun] have been [verb] on a	181
17	[noun] have been [vb pp] on a	163
18	[noun] have been [v-ing] on a	18
19	[noun] have been based on a	13
20	[noun] have been work on a	13
21	[noun] have been base on a	13
22	[noun] have been working on a	12
23	[noun] have been record on a	7
24	[noun] have been recorded on a	7
25	[noun] have been made on a	6
26	[noun] have been placed on a	6
27	[noun] have been make on a	6
28	[noun] have been place on a	6
29	[noun] have been produced on a	5
30	[noun] have been reached on a	5