No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a prolonged [noun sg] [prep] | 9 | |
2 | over a prolonged [noun] [prep] | 9 | |
3 | over a prolonged period [prep] | 9 | |
4 | over a prolonged [noun] [prep] | 9 | |
5 | over a prolonged period [prep] | 9 | |
6 | over a prolonged [noun] of | 8 | |
7 | over a prolonged [noun] of | 8 |