| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] year for [noun] | 189 |
|
| 2 | [num] year for [noun sg] | 102 |
|
| 3 | [num] year [prep] treatment | 23 |
|
| 4 | [num] [noun] for treatment | 15 |
|
| 5 | [adj] year for treatment | 12 |
|
| 6 | [num] year for treatment | 11 |
|
