SN4 ""

No	Pattern	Freq
1	[noun] have since been	118
2	[pron] have since been	95
3	[noun sg] have since been	64
4	[conj] have since been	60
5	[pers pn] have since been	53
6	[coord] have since been	46
7	[noun pl] have since been	40
8	and have since been	38
9	and have since been	38
10	[Wh det] have since been	30
11	which have since been	26
12	which have since been	26
13	it have since been	26
14	it have since been	26
15	[adj] have since been	20
16	[det] have since been	13
17	they have since been	12
18	they have since been	12
19	that have since been	11
20	that have since been	11
21	[that] have since been	11
22	he have since been	10
23	he have since been	10
24	[noun prp] have since been	9
25	but have since been	8
26	but have since been	8
27	who have since been	7
28	this have since been	7
29	who have since been	7
30	[Wh pn] have since been	7