| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] of two [noun] ' duration | 7 |
|
| 2 | [be] [prep] two years ' duration | 7 |
|
| 3 | [be] [prep] two [noun pl] ' duration | 7 |
|
| 4 | [be] [prep] two [noun] ' duration | 7 |
|
| 5 | [be] [prep] two [noun] ' duration | 7 |
|
| 6 | [be] [prep] two [noun] ' duration | 7 |
|
| 7 | [be] [prep] two year ' duration | 7 |
|
| 8 | be [prep] two [noun] ' duration | 7 |
|
| 9 | is [prep] two [noun] ' duration | 6 |
|
| 10 | [is] [prep] two [noun] ' duration | 6 |
|
