| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [art] brief period | 19 |
|
| 2 | [verb] [art] brief period | 19 |
|
| 3 | [verb] a brief period | 18 |
|
| 4 | [verb] a brief period | 18 |
|
| 5 | [vb past] [art] brief period | 9 |
|
| 6 | [v-ing] [art] brief period | 5 |
|
