| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | after [art] period [prep] | 158 |
|
| 2 | after [art] period [prep] | 158 |
|
| 3 | after a period [prep] | 154 |
|
| 4 | after a period [prep] | 154 |
|
| 5 | after [adj] period [prep] | 17 |
|
| 6 | after [adj] period [prep] | 12 |
|
