| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what have happened [prep] | 780 |
|
| 2 | what have [vb pp] to | 562 |
|
| 3 | what had [vb pp] [prep] | 444 |
|
| 4 | what 's [vb pp] [prep] | 321 |
|
| 5 | what has [vb pp] [prep] | 314 |
|
| 6 | what have [vb pp] in | 162 |
|
| 7 | what have come [prep] | 54 |
|
| 8 | what have [vb pp] as | 38 |
|
| 9 | what have [vb pp] into | 38 |
|
| 10 | what have got [prep] | 36 |
|
| 11 | what have [vb pp] on | 32 |
|
| 12 | what have [vb pp] at | 32 |
|
| 13 | what have [vb pp] of | 32 |
|
| 14 | what have [vb pp] with | 31 |
|
| 15 | what have become [prep] | 31 |
|
| 16 | what have [vb pp] over | 30 |
|
| 17 | what have [vb pp] between | 24 |
|
| 18 | what have known [prep] | 23 |
|
| 19 | what have gone [prep] | 22 |
|
| 20 | what have [vb pp] before | 19 |
|
| 21 | what have occurred [prep] | 15 |
|
| 22 | what have [vb pp] since | 15 |
|
| 23 | what have [vb pp] from | 11 |
|
| 24 | what have [vb pp] during | 10 |
|
| 25 | what have [vb pp] for | 10 |
|
| 26 | what have passed [prep] | 10 |
|
| 27 | what have changed [prep] | 10 |
|
| 28 | what have [vb pp] after | 7 |
|
| 29 | what have seemed [prep] | 7 |
|
| 30 | what have begun [prep] | 7 |
|
