| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | if it had [vb pp] | 179 |
|
| 2 | if it had go | 22 |
|
| 3 | if it had gone | 21 |
|
| 4 | if it had happened | 16 |
|
| 5 | if it had happen | 16 |
|
| 6 | if it had [to-vb] | 9 |
|
| 7 | if it had become | 7 |
|
| 8 | if it had done | 7 |
|
| 9 | if it had become | 7 |
|
| 10 | if it had do | 7 |
|
| 11 | if it had occurred | 6 |
|
| 12 | if it had occur | 6 |
|
| 13 | if it had turn | 5 |
|
| 14 | if it had come | 5 |
|
| 15 | if it had have | 5 |
|
| 16 | if it had come | 5 |
|
