| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [modal v] [be] a [noun sg] | 508 |
|
| 2 | [modal v] [be] [vb pp] a [noun sg] | 434 |
|
| 3 | [det] [modal v] [be] [vb pp] a | 31 |
|
| 4 | [det] [modal v] [be] [vb pp] [noun sg] | 29 |
|
