| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] therefore [adj] [to-vb] | 260 |
|
| 2 | [is] [adv] appropriate [to-vb] | 69 |
|
| 3 | [be] therefore appropriate [to-vb] | 5 |
|
| 4 | [is] therefore appropriate [verb] | 5 |
|
