| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] three [noun pl] ' duration | 28 |
|
| 2 | [prep] three [noun pl] ' duration | 28 |
|
| 3 | of three [noun pl] ' duration | 27 |
|
| 4 | of three [noun pl] ' duration | 27 |
|
