| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [vb infin] been a | 1726 |
|
| 2 | [modal v] have been a | 1695 |
|
| 3 | would [vb infin] been a | 510 |
|
| 4 | would [vb infin] been a | 492 |
|
| 5 | must [vb infin] been a | 430 |
|
| 6 | must [vb infin] been a | 430 |
|
| 7 | could [vb infin] been a | 226 |
|
| 8 | could [vb infin] been a | 226 |
|
| 9 | may [vb infin] been a | 209 |
|
| 10 | may [vb infin] been a | 209 |
|
| 11 | might [vb infin] been a | 201 |
|
| 12 | might [vb infin] been a | 201 |
|
| 13 | should [vb infin] been a | 135 |
|
| 14 | should [vb infin] been a | 135 |
|
| 15 | [modal v] 've been a | 31 |
|
| 16 | 'd [vb infin] been a | 18 |
|
| 17 | will [vb infin] been a | 14 |
|
| 18 | will [vb infin] been a | 12 |
|
