SN4 ""

No	Pattern	Freq
1	[noun] until they	723
2	[noun sg] until they	416
3	[verb] until they	297
4	[noun pl] until they	280
5	[adv] until they	236
6	[adv] until they	111
7	[pron] until they	98
8	[adj] until they	87
9	[adv prt] until they	83
10	[pers pn] until they	80
11	[vb pp] until they	80
12	wait until they	65
13	[adj] until they	63
14	[vb infin] until they	55
15	[vb past] until they	52
16	they until they	47
17	them until they	45
18	[not/n't] until they	42
19	not until they	42
20	[to-vb] until they	41
21	[vb base] until they	40
22	[conj] until they	40
23	[coord] until they	31
24	not until they	30
25	[v-ing] until they	24
26	up until they	21
27	[noun prp] until they	21
28	up until they	21
29	on until they	19
30	waited until they	19