| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to speak at [art] | 20 |
|
| 2 | [verb] to speak at the | 14 |
|
| 3 | [vb pp] to speak at [art] | 14 |
|
| 4 | [verb] to speak at the | 14 |
|
| 5 | invited to speak at [art] | 6 |
|
| 6 | [verb] to speak at a | 6 |
|
| 7 | [verb] to speak at a | 6 |
|
| 8 | invite to speak at [art] | 6 |
|
