No | Pattern | Freq | Relations |
---|---|---|---|
1 | for a long period [prep] | 33 | |
2 | for a long period [prep] | 33 | |
3 | for a long period [prep] | 27 | |
4 | for a long period of | 21 | |
5 | for a long period of | 21 | |
6 | for a longer period [prep] | 6 |
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