| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is therefore a [adj] | 81 |
|
| 2 | is therefore an [adj] | 28 |
|
| 3 | is therefore a important | 6 |
|
| 4 | is therefore a useful | 5 |
|
| 5 | is therefore a good | 5 |
|
