SN4 ""

No	Pattern	Freq
1	[noun] have been used for	82
2	[pron] have been used for	42
3	[noun sg] have been used for	38
4	[noun pl] have been used for	37
5	which have been used for	22
6	[Wh det] have been used for	22
7	which have been used for	22
8	[conj] have been used for	20
9	[pers pn] have been used for	19
10	[modal v] have been used for	15
11	[vb mod] have been used for	15
12	it have been used for	14
13	that have been used for	14
14	it have been used for	14
15	that have been used for	14
16	[that] have been used for	14
17	[verb] have been used for	9
18	[adj] have been used for	8
19	[adv] have been used for	8
20	[adv] have been used for	7
21	[vb pp] have been used for	6
22	could have been used for	6
23	could have been used for	6
24	may have been used for	5
25	[noun prp] have been used for	5
26	may have been used for	5
27	[coord] have been used for	5
28	have [adv] been used for	43
29	have [adv] been used for	27
30	have [not/n't] been used for	16