SN4 ""

No	Pattern	Freq
1	[noun] [prep] some years	178
2	[noun sg] [prep] some years	123
3	[verb] [prep] some years	118
4	[vb pp] [prep] some years	42
5	[adj] [prep] some years	38
6	[adv] [prep] some years	33
7	[noun pl] [prep] some years	33
8	[conj] [prep] some years	32
9	[adj] [prep] some years	30
10	[vb past] [prep] some years	24
11	[coord] [prep] some years	24
12	and [prep] some years	21
13	and [prep] some years	21
14	[noun prp] [prep] some years	20
15	[adv] [prep] some years	20
16	have [prep] some years	20
17	[v-ing] [prep] some years	16
18	[pron] [prep] some years	15
19	[vb -s] [prep] some years	13
20	[be] [prep] some years	13
21	be [prep] some years	13
22	has [prep] some years	12
23	[pers pn] [prep] some years	12
24	[to-vb] [prep] some years	11
25	[adv prt] [prep] some years	9
26	[been] [prep] some years	7
27	[vb base] [prep] some years	7
28	continue [prep] some years	7
29	work [prep] some years	7
30	been [prep] some years	7