SN4 ""

No	Pattern	Freq
1	have been [det] [noun pl]	346
2	have be [det] [noun pl]	212
3	have be many [noun pl]	108
4	have be some [noun pl]	75
5	had be [det] [noun pl]	73
6	have be several [noun pl]	67
7	have be few [noun pl]	33
8	have be [det] [noun pl]	31
9	have be any [noun pl]	22
10	have be [det] attempts	22
11	have be [det] changes	19
12	have be [det] studies	15
13	have be [det] years	11
14	have be [det] cases	11
15	's be [det] [noun pl]	10
16	have be more [noun pl]	10
17	have be all [noun pl]	9
18	have be [det] examples	8
19	have be [det] times	8
20	've be [det] [noun pl]	7
21	have be those [noun pl]	7
22	have be [det] suggestions	6
23	have be [det] occasions	6
24	have be [det] reports	6
25	have be [det] problems	6
26	have be [det] improvements	5
27	has be [det] [noun pl]	5
28	have be fewer [noun pl]	5