| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been extended [prep] [noun] | 14 |
|
| 2 | been extended [prep] [num] [noun] | 12 |
|
| 3 | has been [prep] [num] [noun] | 12 |
|
| 4 | has been extended [prep] [num] | 6 |
|
