| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | years ' [adj] [noun sg] | 92 |
|
| 2 | four years ' [noun sg] | 68 |
|
| 3 | four years ' [adj] | 5 |
|
| 4 | four years [adj] [noun sg] | 5 |
|
