| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] a half years [unc] | 6 |
|
| 2 | and a half years [unc] | 6 |
|
| 3 | [conj] a half years [unc] | 6 |
|
| 4 | and a half years [unc] | 6 |
|
