| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [num] years ' [noun] | 684 |
|
| 2 | be [prep] [num] years ' | 59 |
|
| 3 | be [prep] [num] years [noun] | 11 |
|
| 4 | be [num] years ' [noun] | 10 |
|
