| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [adv prt] [prep] [det] | 67 |
|
| 2 | could [vb infin] [prep] [det] time | 35 |
|
| 3 | [vb infin] [adv prt] [prep] [det] time | 27 |
|
| 4 | could [vb infin] [adv prt] [prep] time | 5 |
|
