| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what has [vb pp] | 903 |
|
| 2 | what has happen | 478 |
|
| 3 | what has happened | 474 |
|
| 4 | what has become | 88 |
|
| 5 | what has become | 88 |
|
| 6 | what has gone | 83 |
|
| 7 | what has go | 83 |
|
| 8 | what has come | 37 |
|
| 9 | what has come | 37 |
|
| 10 | what has change | 26 |
|
| 11 | what has changed | 26 |
|
| 12 | what has occur | 24 |
|
| 13 | what has occurred | 24 |
|
| 14 | what has made | 18 |
|
| 15 | what has make | 18 |
|
| 16 | what has bring | 13 |
|
| 17 | what has brought | 13 |
|
| 18 | what has caused | 12 |
|
| 19 | what has taken | 12 |
|
| 20 | what has cause | 12 |
|
| 21 | what has take | 12 |
|
| 22 | what has emerged | 7 |
|
| 23 | what has emerge | 7 |
|
| 24 | what has got | 6 |
|
| 25 | what has prove | 6 |
|
| 26 | what has proved | 6 |
|
| 27 | what has get | 6 |
|
