| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] a [noun] | 1884 |
|
| 2 | is [prep] a [noun sg] | 1814 |
|
| 3 | be [prep] a time | 61 |
|
| 4 | [be] [prep] a time | 61 |
|
| 5 | is [prep] [art] time | 38 |
|
| 6 | [is] [prep] a time | 10 |
|
| 7 | is [prep] a time | 8 |
|
