SN4 ""

No	Pattern	Freq
1	[det] have [adv] been [vb pp]	364
2	[det] has [adv] been [verb]	222
3	this have [adv] been [verb]	179
4	[det] have already been [verb]	79
5	[det] have now been [verb]	78
6	[det] have [adv] been [verb]	78
7	that have [adv] been [verb]	63
8	[det] had [adv] been [verb]	58
9	these have [adv] been [verb]	57
10	[det] have never been [verb]	25
11	[det] have [adv] been do	19
12	[det] have [adv] been done	19
13	[det] have also been [verb]	19
14	much have [adv] been [verb]	19
15	[det] have recently been [verb]	14
16	[det] 's [adv] been [verb]	14
17	[det] have since been [verb]	12
18	[det] have [adv] been achieved	11
19	some have [adv] been [verb]	11
20	[det] have [adv] been achieve	11
21	[det] have [adv] been make	10
22	[det] have [adv] been [v-ing]	10
23	latter have [adv] been [verb]	10
24	[det] have [adv] been made	10
25	[det] have only been [verb]	9
26	[det] have actually been [verb]	8
27	[det] have [adv] been found	8
28	[det] have [adv] been find	8
29	[det] have all been [verb]	8
30	[det] have ever been [verb]	8