| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] up to | 1101 |
|
| 2 | could [vb infin] [adv] to | 517 |
|
| 3 | could [vb infin] [adv prt] to | 424 |
|
| 4 | could [vb infin] up [prep] | 412 |
|
| 5 | could [verb] up to | 174 |
|
| 6 | could [vb infin] up to | 174 |
|
