SN4 ""

No	Pattern	Freq
1	[pron] have been for [noun]	52
2	[pers pn] have [been] for [noun]	48
3	[pron] have [been] for [noun pl]	39
4	[pron] had [been] for [noun]	25
5	it have [been] for [noun]	21
6	it have [been] for [noun]	21
7	[pron] have [been] for year	18
8	[pron] have [been] for years	18
9	they have [been] for [noun]	14
10	they have [been] for [noun]	14
11	[pron] has [been] for [noun]	9
12	[pron] have [been] for [noun sg]	7
13	[pron] have [been] for [noun]	7
14	[pron] have [been] for centuries	6
15	[pron] have [been] for century	6
16	[pron] have [been] for [noun prp]	6
17	he have [been] for [noun]	5
18	[pron] 'd [been] for [noun]	5
19	he have [been] for [noun]	5