| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [num] [noun pl] ' duration | 95 |
|
| 2 | [num] years ' duration | 70 |
|
| 3 | three [noun pl] ' duration | 28 |
|
| 4 | four [noun pl] ' duration | 28 |
|
| 5 | two [noun pl] ' duration | 9 |
|
| 6 | [num] months ' duration | 9 |
|
| 7 | [num] minutes ' duration | 8 |
|
