SN4 ""

No	Pattern	Freq
1	[noun sg] have [adv] been [vb pp] in	336
2	[noun sg] has [adv] been [verb] in	230
3	[noun sg] have already been [verb] in	100
4	[noun sg] had [adv] been [verb] in	63
5	[noun sg] have also been [verb] in	63
6	[noun sg] have [adv] been [verb] in	46
7	[noun sg] have recently been [verb] in	26
8	[noun sg] have now been [verb] in	24
9	[noun sg] have [adv] been report in	14
10	[noun sg] have [adv] been reported in	14
11	[noun sg] have never been [verb] in	13
12	[noun sg] have [adv] been discuss in	12
13	[noun sg] have [adv] been make in	12
14	[noun sg] have [adv] been found in	12
15	[noun sg] have [adv] been find in	12
16	[noun sg] have [adv] been made in	12
17	[noun sg] have [adv] been discussed in	12
18	[noun sg] have [adv] been seen in	10
19	[noun sg] have [adv] been see in	10
20	[noun sg] have just been [verb] in	9
21	[noun sg] have [adv] been use in	8
22	[noun sg] have [adv] been used in	8
23	[noun sg] have previously been [verb] in	8
24	[noun sg] have [adv] been described in	7
25	[noun sg] have [adv] been describe in	7
26	[noun sg] have only been [verb] in	7
27	[noun sg] have [adv] been mentioned in	7
28	[noun sg] have long been [verb] in	7
29	[noun sg] have [adv] been mention in	7
30	[noun sg] have always been [verb] in	7