| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years after [noun] | 240 |
|
| 2 | [noun] after surgery | 38 |
|
| 3 | [noun pl] after surgery | 24 |
|
| 4 | years [prep] surgery | 10 |
|
| 5 | year after surgery | 7 |
|
