| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] [adj] time [verb] | 988 |
|
| 2 | at [art] [adj] [noun] ensure | 20 |
|
| 3 | at [art] [adj] [noun sg] ensure | 20 |
|
| 4 | at [art] [adj] time ensure | 15 |
|
| 5 | [prep] [art] [adj] time ensure | 15 |
|
| 6 | at [art] [adj] time ensure | 15 |
|
| 7 | [prep] [art] [adj] time ensure | 15 |
|
