SN4 ""

No	Pattern	Freq
1	[noun] for decades	111
2	[verb] for decades	73
3	[noun sg] for decades	57
4	[noun pl] for decades	39
5	[vb pp] for decades	25
6	[adv] for decades	23
7	[adj] for decades	21
8	[adj] for decades	17
9	[pron] for decades	16
10	[noun prp] for decades	15
11	[v-ing] for decades	13
12	[adv] for decades	13
13	have for decades	11
14	[conj] for decades	11
15	[vb past] for decades	11
16	[pers pn] for decades	10
17	[adv prt] for decades	10
18	on for decades	8
19	on for decades	8
20	[vb -s] for decades	8
21	[vb base] for decades	7
22	[vb infin] for decades	6
23	[be] for decades	5
24	that for decades	5
25	[that] for decades	5
26	be for decades	5
27	last for decades	5
28	that for decades	5
29	[coord] for decades	5
30	for [adj] decades	140