| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj] period of | 214 |
|
| 2 | for a considerable [noun sg] of | 25 |
|
| 3 | for a considerable [noun] of | 25 |
|
| 4 | [prep] a considerable period of | 17 |
|
| 5 | for a considerable period [prep] | 10 |
|
| 6 | for a considerable period [prep] | 10 |
|
| 7 | for [art] considerable period of | 7 |
|
| 8 | for a considerable period of | 7 |
|
| 9 | for a considerable period of | 7 |
|
