| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [conj] | 11283 |
|
| 2 | is usually [vb pp] | 1192 |
|
| 3 | usually [vb pp] [conj] | 227 |
|
| 4 | is usually [conj] | 24 |
|
