| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [conj] | 37774 |
|
| 2 | [prep] a [noun] [is] | 3217 |
|
| 3 | a [noun] [conj] [is] | 2331 |
|
| 4 | [prep] [noun] [conj] [is] | 2175 |
|
