| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] so far [conj] [to-vb] | 53 |
|
| 2 | [modal v] [vb infin] so far [conj] | 31 |
|
| 3 | [modal v] [vb infin] so [conj] [to-vb] | 13 |
|
