| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] what happened to | 208 |
|
| 2 | [prep] what happened to | 85 |
|
| 3 | [prep] what happened to | 85 |
|
| 4 | [vb base] what happened to | 69 |
|
| 5 | know what happened to | 69 |
|
| 6 | [vb infin] what happened to | 62 |
|
| 7 | [adv] what happened to | 57 |
|
| 8 | [adv] what happened to | 42 |
|
| 9 | [conj] what happened to | 41 |
|
| 10 | know what happened to | 37 |
|
| 11 | [coord] what happened to | 34 |
|
| 12 | be what happened to | 33 |
|
| 13 | [be] what happened to | 33 |
|
| 14 | wonder what happened to | 28 |
|
| 15 | [is] what happened to | 28 |
|
| 16 | [to-vb] what happened to | 27 |
|
| 17 | about what happened to | 24 |
|
| 18 | about what happened to | 24 |
|
| 19 | of what happened to | 21 |
|
| 20 | of what happened to | 21 |
|
| 21 | wonder what happened to | 21 |
|
| 22 | look what happened to | 20 |
|
| 23 | look what happened to | 20 |
|
| 24 | and what happened to | 19 |
|
| 25 | and what happened to | 19 |
|
| 26 | 's what happened to | 19 |
|
| 27 | so what happened to | 17 |
|
| 28 | so what happened to | 17 |
|
| 29 | see what happened to | 16 |
|
| 30 | [vb past] what happened to | 16 |
|
