| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to [be] an [noun sg] | 872 |
|
| 2 | to [be] [vb pp] [noun sg] | 448 |
|
| 3 | [be] [vb pp] an [noun sg] | 132 |
|
| 4 | to [be] [vb pp] an | 64 |
|
