| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | then [vb pp] [prep] [art] | 1642 |
|
| 2 | [vb pp] on [prep] [art] | 1535 |
|
| 3 | then on [prep] [art] | 58 |
|
| 4 | then [vb pp] on [prep] | 56 |
|
| 5 | then [vb pp] on [art] | 8 |
|
