| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [indef pn] could [adv] [verb] [prep] a | 7 |
|
| 2 | [indef pn] could [adv] [vb infin] [prep] a | 7 |
|
| 3 | [indef pn] could [adv] [verb] [prep] a | 6 |
|
| 4 | one could [adv] [verb] [prep] a | 6 |
|
