| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] [prep] | 4737 |
|
| 2 | is therefore [vb pp] [prep] | 111 |
|
| 3 | it is therefore [vb pp] | 45 |
|
| 4 | it is therefore [prep] | 42 |
|
