| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] keep an [noun] on | 70 |
|
| 2 | could [vb infin] an [noun] on | 27 |
|
| 3 | could [verb] an [noun] on | 27 |
|
| 4 | could keep a [noun] on | 16 |
|
| 5 | could keep [art] [noun] on | 16 |
|
| 6 | could keep [art] [noun] on | 16 |
|
| 7 | could keep an [noun] on | 13 |
|
| 8 | could keep an [noun] on | 13 |
|
| 9 | could keep an [noun] [prep] | 13 |
|
| 10 | could keep an [noun] [prep] | 13 |
|
