| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [is] [noun] [letter] | 62 |
|
| 2 | [det] [is] it [noun] | 26 |
|
| 3 | [is] it [noun] [letter] | 18 |
|
| 4 | [det] [is] it [letter] | 7 |
|
