| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after a [adj] [noun] [prep] | 1445 |
|
| 2 | [prep] a [adj] period [prep] | 871 |
|
| 3 | after [art] [adj] period [prep] | 95 |
|
| 4 | after a [adj] period [prep] | 87 |
|
