| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [vb infin] been [art] | 3017 |
|
| 2 | [modal v] [vb infin] be a | 2175 |
|
| 3 | [modal v] [vb infin] [be] a | 2175 |
|
| 4 | [modal v] [verb] been a | 2005 |
|
| 5 | [modal v] [vb infin] [been] a | 1999 |
|
