| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] [noun sg] [art] | 1516 |
|
| 2 | be [prep] an [noun sg] | 848 |
|
| 3 | [prep] an [noun sg] [art] | 362 |
|
| 4 | be an [noun sg] [art] | 44 |
|
