| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] by a period | 33 |
|
| 2 | [vb pp] by a period | 33 |
|
| 3 | followed by a period | 18 |
|
| 4 | follow by a period | 18 |
|
| 5 | by a [adj] period | 19 |
|
| 6 | by a [adj] period | 18 |
|
| 7 | by a period [prep] | 37 |
|
| 8 | by a period [prep] | 37 |
|
| 9 | by a period of | 33 |
|
| 10 | by a period of | 33 |
|
