| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | follow [prep] a period [prep] | 19 |
|
| 2 | followed [prep] a period [prep] | 18 |
|
| 3 | follow by a period [prep] | 18 |
|
| 4 | follow [prep] a period of | 16 |
|
| 5 | follow [prep] a period of | 16 |
|
