| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two or three years ['s] [noun] | 6 |
|
| 2 | two or three years ' [noun] | 6 |
|
| 3 | two or three years ' [noun] | 6 |
|
| 4 | two or three years [unc] [noun sg] | 5 |
|
