| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [verb] | 12572 |
|
| 2 | that is [verb] | 2111 |
|
| 3 | that is [vb pp] | 848 |
|
| 4 | that [vb pp] [verb] | 81 |
|
