SN4 ""

No	Pattern	Freq
1	[prep] [det] [subord] a century	71
2	[prep] [det] [subord] a century	71
3	for [det] [subord] a century	49
4	for [det] [subord] a century	49
5	[adv] [det] [subord] a century	9
6	[adj] [det] [subord] a century	7
7	[adv] [det] [subord] a century	7
8	[det] [det] [subord] a century	7
9	of [det] [subord] a century	7
10	of [det] [subord] a century	7
11	little [det] [subord] a century	6
12	little [det] [subord] a century	6
13	in [det] [subord] a century	5
14	in [det] [subord] a century	5
15	[verb] [det] [subord] a century	5
16	[conj] [det] [subord] a century	5
17	[det] [det] [subord] a century	7
18	[det] more [subord] a century	7
19	[det] more [subord] a century	7
20	[det] [adj] [subord] a century	7
21	[det] [subord] [adj] a century	25
22	[det] [subord] half a century	25
23	[det] [subord] half a century	25
24	[det] [subord] [det] a century	25
25	[det] [subord] a century [adv]	20
26	[det] [subord] a century [adv]	20
27	[det] [subord] a century [prep]	14
28	[det] [subord] a century [prep]	14
29	[det] [subord] a century ago	13
30	[det] [subord] a century ago	13