| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] the [num ord] anniversary | 37 |
|
| 2 | celebrated the [num ord] anniversary | 17 |
|
| 3 | marked the [num ord] anniversary | 14 |
|
| 4 | [vb past] the tenth anniversary | 5 |
|
