| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] been a [noun sg] | 793 |
|
| 2 | what [modal v] [vb infin] been a | 100 |
|
| 3 | what [modal v] [vb infin] a [noun sg] | 11 |
|
| 4 | what [modal v] [vb infin] been [noun sg] | 10 |
|
