SN4 ""

No	Pattern	Freq
1	[noun prp] have been [vb pp] [prep] a	289
2	[noun prp] has been [vb pp] [prep] a	133
3	[noun prp] had been [vb pp] [prep] a	121
4	[noun prp] have been [vb pp] by a	63
5	[noun prp] have been [vb pp] by a	63
6	[noun prp] have been [vb pp] as a	58
7	[noun prp] have been [vb pp] as a	58
8	[noun prp] have been [vb pp] to a	34
9	[noun prp] have been [vb pp] to a	34
10	[noun prp] have been [vb pp] in a	31
11	[noun prp] have been [vb pp] in a	31
12	[noun prp] have been [vb pp] [prep] a	31
13	[noun prp] have been [vb pp] with a	27
14	[noun prp] have been [vb pp] with a	27
15	[noun prp] have been [vb pp] into a	20
16	[noun prp] have been [vb pp] into a	20
17	[noun prp] have been [vb pp] on a	13
18	[noun prp] have been [vb pp] on a	13
19	[noun prp] have been [vb pp] from a	11
20	[noun prp] have been [vb pp] from a	11
21	[noun prp] have been [vb pp] for a	8
22	[noun prp] have been [vb pp] for a	8
23	britain have been [vb pp] [prep] a	7
24	[noun prp] have been killed [prep] a	7
25	[noun prp] have been [vb pp] at a	6
26	[noun prp] have been [vb pp] at a	6
27	[noun prp] have been transformed [prep] a	6
28	[noun prp] have been used [prep] a	5
29	[noun prp] have been seen [prep] a	5
30	[noun prp] have been developed [prep] a	5