SN4 ""

No	Pattern	Freq
1	[noun] of [det] period	368
2	[noun sg] of [det] period	225
3	[noun pl] of [det] period	133
4	end of [det] period	53
5	end of [det] period	53
6	[adj] of [det] period	33
7	[det] of [det] period	24
8	part of [det] period	12
9	part of [det] period	12
10	most of [det] period	11
11	most of [det] period	11
12	much of [det] period	10
13	much of [det] period	10
14	whole of [det] period	8
15	whole of [det] period	8
16	years of [det] period	8
17	year of [det] period	8
18	[verb] of [det] period	8
19	work of [det] period	7
20	expiry of [det] period	7
21	work of [det] period	7
22	expiry of [det] period	7
23	beginning of [det] period	6
24	[adj] of [det] period	6
25	beginning of [det] period	6
26	[noun prp] of [det] period	5
27	of [art] [det] period	34
28	of [art] [det] period	34
29	of the [det] period	33
30	of the [det] period	33