SN4 ""

No	Pattern	Freq
1	[noun] [prep] the [adj] period	1388
2	[noun] [prep] the [adj] period	985
3	[noun sg] [prep] the [adj] period	829
4	[noun] in the [adj] period	428
5	[noun pl] [prep] the [adj] period	395
6	[noun] of the [adj] period	371
7	[noun] [prep] the [det] period	264
8	[noun] [prep] the same period	263
9	[noun] [prep] the same period	263
10	[noun] during the [adj] period	187
11	[noun] over the [adj] period	131
12	[noun] for the [adj] period	97
13	[noun] [prep] the post-war period	91
14	[noun] [prep] the post-war period	91
15	[noun prp] [prep] the [adj] period	83
16	[n mass] [prep] the [adj] period	77
17	[noun] [prep] the inter-war period	70
18	[noun] [prep] the inter-war period	70
19	[noun] [prep] the [num ord] period	63
20	end [prep] the [adj] period	58
21	end [prep] the [adj] period	58
22	[noun] from the [adj] period	45
23	[noun] [prep] the [num] period	36
24	[noun] [prep] the early period	34
25	[noun] [prep] the [adj -er] period	30
26	[noun] [prep] the second period	29
27	[noun] [prep] the second period	29
28	[noun] throughout the [adj] period	26
29	[noun] [prep] the transitional period	25
30	[noun] [prep] the transitional period	25