SN4 ""

No	Pattern	Freq
1	[verb] until now	77
2	[noun] until now	61
3	[conj] until now	47
4	[noun sg] until now	40
5	[pron] until now	38
6	[vb pp] until now	33
7	[coord] until now	29
8	[adv] until now	29
9	have until now	28
10	[adj] until now	20
11	[pers pn] until now	17
12	but until now	16
13	but until now	16
14	[adj] until now	15
15	[noun pl] until now	15
16	that until now	14
17	that until now	14
18	[that] until now	14
19	has until now	14
20	[vb -s] until now	14
21	and until now	13
22	and until now	13
23	[adv] until now	12
24	[vb base] until now	11
25	not until now	10
26	have until now	10
27	not until now	10
28	[not/n't] until now	10
29	[Wh det] until now	9
30	it until now	9