| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what is [verb] | 4093 |
|
| 2 | what is [vb pp] | 2714 |
|
| 3 | what is [v-ing] | 1288 |
|
| 4 | what is happen | 629 |
|
| 5 | what is happening | 606 |
|
| 6 | what is go | 479 |
|
| 7 | what is going | 478 |
|
| 8 | what is mean | 263 |
|
| 9 | what is meant | 263 |
|
| 10 | what is know | 253 |
|
| 11 | what is known | 252 |
|
| 12 | what is needed | 216 |
|
| 13 | what is need | 216 |
|
| 14 | what is call | 210 |
|
| 15 | what is called | 210 |
|
| 16 | what is required | 199 |
|
| 17 | what is require | 199 |
|
| 18 | what is say | 179 |
|
| 19 | what is said | 174 |
|
| 20 | what is expected | 111 |
|
| 21 | what is expect | 111 |
|
| 22 | what is leave | 101 |
|
| 23 | what is left | 101 |
|
| 24 | what is [to-vb] | 86 |
|
| 25 | what is see | 63 |
|
| 26 | what is seen | 63 |
|
| 27 | what is do | 51 |
|
| 28 | what is done | 47 |
|
| 29 | what is involve | 42 |
|
| 30 | what is involved | 42 |
|
