| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] [prep] [num] years | 17 |
|
| 2 | who [verb] [prep] [num] year | 17 |
|
| 3 | who [vb past] [prep] [num] year | 12 |
|
| 4 | who [verb] for [num] year | 8 |
|
| 5 | who [verb] for [num] year | 8 |
|
