| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [vb mod] [verb] this [prep] a | 9 |
|
| 2 | [noun sg] [modal v] [verb] this [prep] a | 9 |
|
| 3 | [noun sg] [modal v] [vb infin] this [prep] a | 9 |
|
