| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] 20 year ' [noun] | 12 |
|
| 2 | [noun sg] [prep] 20 year ' [noun] | 10 |
|
| 3 | [verb] [prep] 20 year ' [noun] | 6 |
|
| 4 | [vb pp] [prep] 20 year ' [noun] | 5 |
|
| 5 | [prep] 20 year ' [noun] [prep] | 12 |
|
| 6 | [prep] 20 year ' [noun] [prep] | 12 |
|
| 7 | [prep] 20 year ' [noun] for | 5 |
|
| 8 | [prep] 20 year ' [noun] for | 5 |
|
