| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [verb] [prep] a [adj] time | 41 |
|
| 2 | [modal v] [verb] [prep] a [adj] time | 38 |
|
| 3 | [modal v] [verb] [prep] a considerable [noun] | 17 |
|
| 4 | [modal v] [verb] [prep] [art] considerable time | 5 |
|
| 5 | [modal v] [verb] [prep] a considerable time | 5 |
|
