| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what is often [verb] | 48 |
|
| 2 | what is often [verb] | 48 |
|
| 3 | what is often [vb pp] | 47 |
|
| 4 | what is often call | 9 |
|
| 5 | what is often called | 9 |
|
