| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | collection [prep] 20th century | 5 |
|
| 2 | collection [prep] 20th [noun] | 5 |
|
| 3 | collection [prep] 20th century | 5 |
|
| 4 | collection [prep] 20th [noun sg] | 5 |
|
