| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | extent [been] [vb pp] [prep] [art] | 11 |
|
| 2 | extent been [verb] [prep] [art] | 11 |
|
| 3 | extent [been] [verb] [prep] the | 8 |
|
| 4 | extent [been] [verb] by [art] | 7 |
|
