SN4 ""

No	Pattern	Freq
1	[noun] have been used [prep]	139
2	[noun pl] have been used [prep]	116
3	[pron] have been used [prep]	29
4	[conj] have been used [prep]	18
5	[noun sg] have been used [prep]	18
6	[pers pn] have been used [prep]	15
7	[Wh det] have been used [prep]	14
8	which have been used [prep]	14
9	which have been used [prep]	14
10	they have been used [prep]	11
11	[that] have been used [prep]	10
12	that have been used [prep]	10
13	that have been used [prep]	10
14	[adj] have been used [prep]	10
15	they have been used [prep]	9
16	[coord] have been used [prep]	7
17	and have been used [prep]	6
18	and have been used [prep]	6
19	[det] have been used [prep]	5
20	have [adv] been used [prep]	54
21	have [adv] been used [prep]	42
22	have not been used [prep]	12
23	have [not/n't] been used [prep]	12
24	have not been used [prep]	11
25	have also been used [prep]	11
26	have also been used [prep]	11
27	have long been used [prep]	5
28	have long been used [prep]	5
29	have been [adv] used [prep]	22
30	have been [adv] used [prep]	22