| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [prep] a [noun] | 9866 |
|
| 2 | be [prep] a [noun sg] | 9519 |
|
| 3 | be [prep] [art] time | 304 |
|
| 4 | be [prep] a time | 61 |
|
| 5 | [be] [prep] a time | 61 |
|
