SN4 ""

No	Pattern	Freq
1	[ex0] have been [adv] [det] [noun]	133
2	there have been [adv] [det] [noun]	133
3	[ex0] have been [adv] [det] [noun sg]	82
4	[ex0] has been [adv] [det] [noun]	52
5	[ex0] have been so [det] [noun]	51
6	[ex0] have been so [det] [noun]	51
7	[ex0] have been [adv] [det] [noun pl]	49
8	[ex0] have been [adv] little [noun]	37
9	[ex0] have been [adv] many [noun]	34
10	[ex0] have been [adv] much [noun]	33
11	[ex0] have been [adv] [det] [noun]	33
12	[ex0] had been [adv] [det] [noun]	33
13	[ex0] have been very [det] [noun]	27
14	[ex0] have been very [det] [noun]	27
15	[ex0] have been too [det] [noun]	19
16	[ex0] have been too [det] [noun]	19
17	[ex0] have been [adv] few [noun]	16
18	[ex0] 's been [adv] [det] [noun]	11
19	[ex0] have been [adv] [det] change	10
20	[ex0] have been [adv] [det] research	7
21	[ex0] have been [adv] [det] research	7
22	[ex0] have been relatively [det] [noun]	6
23	[ex0] have been relatively [det] [noun]	6
24	[ex0] have been [adv] [det] changes	5
25	[ex0] have been hardly [det] [noun]	5
26	[ex0] have been [adv] [det] change	5
27	[ex0] have been [adv] any [noun]	5
28	[ex0] have been hardly [det] [noun]	5