SN4 ""

No	Pattern	Freq
1	[prep] the [adj] period	2992
2	[prep] the [adj] period	2029
3	in the [adj] period	1022
4	[prep] the [det] period	737
5	[prep] the same period	732
6	[prep] the same period	732
7	during the [adj] period	509
8	of the [adj] period	451
9	over the [adj] period	314
10	for the [adj] period	215
11	[prep] the post-war period	187
12	[prep] the post-war period	187
13	[prep] the [num ord] period	143
14	[prep] the [adj] periods	139
15	[prep] the [num] period	117
16	[prep] the inter-war period	109
17	[prep] the inter-war period	109
18	from the [adj] period	93
19	to the [adj] period	87
20	[prep] the early period	82
21	throughout the [adj] period	78
22	with the [adj] period	71
23	[prep] the [adj -er] period	66
24	[prep] the whole period	64
25	[prep] the whole period	64
26	[prep] the second period	57
27	[prep] the second period	57
28	on the [adj] period	56
29	[prep] the postwar period	44
30	[prep] the postwar period	44