| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it be usually [verb] [prep] | 7 |
|
| 2 | [subord] it [be] usually [vb pp] [prep] | 7 |
|
| 3 | [subord] it [is] usually [verb] [prep] | 6 |
|
| 4 | [subord] it is usually [verb] [prep] | 6 |
|
