| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | than [pron] could [vb infin] [been] | 6 |
|
| 2 | than [pers pn] could [vb infin] [been] | 6 |
|
| 3 | than could [vb infin] [been] [verb] | 6 |
|
| 4 | than could [vb infin] [been] [vb pp] | 6 |
|
