| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] years for [noun] | 184 |
|
| 2 | [num] years for [noun sg] | 100 |
|
| 3 | [num] years [prep] treatment | 17 |
|
| 4 | [num] [noun] for treatment | 15 |
|
| 5 | [num] [noun pl] for treatment | 15 |
|
| 6 | [num] year for treatment | 11 |
|
| 7 | [adj] years for treatment | 11 |
|
| 8 | [num] years for treatment | 11 |
|
