| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two [noun] [noun] [modal v] | 125 |
|
| 2 | [adj] years [noun] [modal v] | 44 |
|
| 3 | [num] years [noun] [modal v] | 30 |
|
| 4 | two [noun pl] [noun] [modal v] | 23 |
|
| 5 | two year [noun] [modal v] | 9 |
|
| 6 | two years [noun] [modal v] | 9 |
|
