| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] [to-vb] a clear | 18 |
|
| 2 | is [adj] [to-vb] a clear | 17 |
|
| 3 | is [to-vb] a clear [noun sg] | 7 |
|
| 4 | is [to-vb] a clear [noun] | 7 |
|
