| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [adv] [vb infin] upon a | 7 |
|
| 2 | [modal v] [adv] [vb infin] upon a | 7 |
|
| 3 | [adv] [vb infin] upon a [noun sg] | 7 |
|
| 4 | [adv] [vb infin] upon a [noun] | 7 |
|
