| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] to mark the 50th [noun sg] | 12 |
|
| 2 | [noun sg] to mark the 50th [noun sg] | 7 |
|
| 3 | to mark the 50th [noun sg] [prep] | 17 |
|
| 4 | to mark the 50th [noun sg] [prep] | 17 |
|
| 5 | to mark the 50th [noun sg] of | 17 |
|
| 6 | to mark the 50th [noun sg] of | 17 |
|
