| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] therefore [adj] [to-vb] [adv] | 31 |
|
| 2 | [is] therefore [adj] [to-vb] [adv] | 31 |
|
| 3 | [is] therefore necessary [to-vb] [adv] | 8 |
|
| 4 | [is] therefore necessary [to-vb] [adv] | 8 |
|
| 5 | [is] therefore important [to-vb] [adv] | 5 |
|
| 6 | [is] therefore important [to-vb] [adv] | 5 |
|
