No | Pattern | Freq | Relations |
---|---|---|---|
1 | [be] [vb pp] for a long period | 8 | |
2 | be [vb pp] for a long period | 8 | |
3 | [vb pp] for a long period [prep] | 7 | |
4 | [vb pp] for a long period [prep] | 7 | |
5 | [vb pp] for a long period of | 5 | |
6 | [vb pp] for a long period of | 5 |