SN4 ""

No	Pattern	Freq
1	[adv] a year [adv]	410
2	[adv] a year [adv]	393
3	[adv] a year ago	231
4	[adv] a year ago	231
5	[adv] a year [prep]	213
6	[adv] a year [prep]	213
7	[adv] a year [conj]	206
8	[adv] a year [coord]	126
9	[adv] a year [verb]	88
10	[adv] a year and	82
11	[adv] a year and	82
12	[adv] a year [subord]	74
13	[adv] a year later	63
14	[adv] a year later	63
15	[adv] a year [adj]	61
16	[adv] a year [to-vb]	54
17	[adv] a year old	45
18	[adv] a year in	44
19	[adv] a year in	44
20	[adv] a year [adj]	40
21	[adv] a year [pron]	39
22	[adv] a year after	38
23	[adv] a year after	38
24	[adv] a year old	36
25	[adv] a year [pers pn]	35
26	[adv] a year or	35
27	[adv] a year or	35
28	[adv] a year [unc]	28
29	[adv] a year now	27
30	[adv] a year now	27