| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [prep] a | 10075 |
|
| 2 | is usually [verb] [prep] | 785 |
|
| 3 | usually [verb] [prep] a | 436 |
|
| 4 | is usually [prep] a | 18 |
|
| 5 | is usually [verb] a | 6 |
|
