| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how [vb past] it [verb] | 159 |
|
| 2 | how [vb past] it [vb infin] | 145 |
|
| 3 | how [vb past] [pron] come | 70 |
|
| 4 | [adv] [vb past] it come | 27 |
|
| 5 | [Wh adv] [vb past] it come | 26 |
|
| 6 | how [verb] it come | 16 |
|
| 7 | how [vb past] it come | 10 |
|
| 8 | how [vb past] it come | 9 |
|
