SN4 ""

No	Pattern	Freq
1	[adv] [adj] period [prep]	245
2	[adv] [adj] period [prep]	214
3	[adv] [adj] period of	156
4	[adv] short period [prep]	67
5	[adv] short period [prep]	62
6	very [adj] period [prep]	60
7	very [adj] period [prep]	60
8	most [adj] period [prep]	49
9	most [adj] period [prep]	49
10	[adv] [adj] period in	46
11	relatively [adj] period [prep]	43
12	relatively [adj] period [prep]	43
13	[adv] long period [prep]	29
14	[adv] long period [prep]	24
15	[adv] [det] period [prep]	21
16	[adv] [adj] period for	18
17	[adv] [adj -er] period [prep]	11
18	[adv] brief period [prep]	7
19	[adv] [adj] period between	7
20	much [adj] period [prep]	7
21	much [adj] period [prep]	7
22	[adv] this period [prep]	7
23	[adv] this period [prep]	7
24	[adv] brief period [prep]	7
25	[adv] difficult period [prep]	5
26	[adv] shorter period [prep]	5
27	[adv] important period [prep]	5
28	[adv] active period [prep]	5
29	[adv] longer period [prep]	5
30	[adv] lengthy period [prep]	5