No | Pattern | Freq | Relations |
---|---|---|---|
1 | over a [adj] period of time | 113 | |
2 | over a long period of [noun sg] | 72 | |
3 | over a short period of [noun sg] | 7 | |
4 | over a considerable period of [noun sg] | 7 | |
5 | over a prolonged period of [noun sg] | 7 | |
6 | over a given period of [noun sg] | 5 |