| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to do is [verb] [det] [adj] | 11 |
|
| 2 | [to-vb] is [verb] [det] [adj] | 8 |
|
| 3 | [to-vb] is [vb infin] [det] [adj] | 6 |
|
| 4 | [to-vb] is [to-vb] [det] [adj] | 5 |
|
