SN4 ""

No	Pattern	Freq
1	[noun] until 1986	18
2	[noun sg] until 1986	13
3	[verb] until 1986	13
4	[adv] until 1986	8
5	not until 1986	6
6	[vb pp] until 1986	6
7	[not/n't] until 1986	6
8	[adj] until 1986	6
9	not until 1986	6
10	[vb past] until 1986	5
11	until [noun] 1986	9
12	until [noun prp] 1986	9
13	until 1986 [conj]	9
14	until 1986 [Wh adv]	7
15	until 1986 when	7
16	until 1986 [adv]	7
17	until 1986 when	7
18	until 1986 [coord]	5