SN4 ""

No	Pattern	Freq
1	[noun] for several years	214
2	[noun sg] for several years	131
3	[verb] for several years	124
4	[vb pp] for several years	48
5	[noun pl] for several years	45
6	[adv] for several years	38
7	[noun prp] for several years	36
8	[adj] for several years	31
9	[adv] for several years	27
10	[adj] for several years	27
11	[vb past] for several years	22
12	[pron] for several years	21
13	[v-ing] for several years	17
14	[conj] for several years	17
15	[pers pn] for several years	15
16	[vb infin] for several years	14
17	work for several years	12
18	have for several years	11
19	[to-vb] for several years	10
20	[coord] for several years	10
21	[adv prt] for several years	9
22	live for several years	8
23	last for several years	8
24	and for several years	7
25	[vb -s] for several years	7
26	and for several years	7
27	empty for several years	6
28	[subord] for several years	6
29	had for several years	6
30	[vb base] for several years	6