| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] a | 9195 |
|
| 2 | [adv] upon a | 229 |
|
| 3 | [vb past] upon a | 132 |
|
| 4 | [adv] [vb past] upon | 105 |
|
