| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [prep] a few years | 13 |
|
| 2 | but [prep] a [det] years | 13 |
|
| 3 | but [prep] a [det] years | 13 |
|
| 4 | but after a [det] years | 6 |
|
| 5 | but after a [det] years | 6 |
|
| 6 | but within a [det] years | 5 |
|
| 7 | but within a [det] years | 5 |
|
