| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be extended to | 136 |
|
| 2 | [modal v] [adv] be extended | 102 |
|
| 3 | [adv] be extended to | 61 |
|
| 4 | [modal v] [adv] be to | 58 |
|
