SN4 ""

No	Pattern	Freq
1	[noun prp] for [num] months	96
2	[noun prp] for six months	22
3	[noun prp] for six months	22
4	[noun prp] for [det] months	20
5	[noun prp] for several months	13
6	[noun prp] for several months	13
7	[noun prp] for three months	12
8	[noun prp] for three months	12
9	[noun prp] for two months	11
10	[noun prp] for two months	11
11	[noun prp] for nine months	8
12	[noun prp] for nine months	8
13	[noun prp] for some months	6
14	[noun prp] for 18 months	6
15	[noun prp] for four months	6
16	[noun prp] for some months	6
17	[noun prp] for four months	6
18	[noun prp] for 18 months	6
19	[noun prp] for seven months	5
20	[noun prp] for seven months	5