No | Pattern | Freq | Relations |
---|---|---|---|
1 | [be] [verb] for a long period | 7 | |
2 | be [verb] for a long period | 7 | |
3 | [verb] for a long period [prep] | 11 | |
4 | [verb] for a long period [prep] | 11 | |
5 | [verb] for a long period of | 7 | |
6 | [verb] for a long period of | 7 |