| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] 20 years | 165 |
|
| 2 | but [adj] years | 133 |
|
| 3 | but 20 [noun] | 6 |
|
| 4 | but 20 [noun pl] | 6 |
|
| 5 | but 20 year | 5 |
|
