SN4 ""

No	Pattern	Freq
1	[pron] have hitherto been	85
2	[Wh det] have hitherto been	54
3	which have hitherto been	33
4	which have hitherto been	33
5	[conj] have hitherto been	33
6	[noun] have hitherto been	32
7	[subord] have hitherto been	22
8	what have hitherto been	21
9	what have hitherto been	21
10	[noun sg] have hitherto been	20
11	[pers pn] have hitherto been	18
12	than have hitherto been	18
13	than have hitherto been	18
14	who have hitherto been	13
15	[Wh pn] have hitherto been	13
16	who have hitherto been	13
17	[that] have hitherto been	10
18	that have hitherto been	10
19	that have hitherto been	10
20	[noun pl] have hitherto been	8
21	it have hitherto been	8
22	it have hitherto been	8
23	have [adv] hitherto been	7
24	have not hitherto been	6
25	have [not/n't] hitherto been	6
26	have not hitherto been	6
27	have hitherto [adv] been	8
28	have hitherto [adv] been	5
29	have hitherto been [verb]	88
30	have hitherto been [vb pp]	85