| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [prep] [num] years | 915 |
|
| 2 | a minimum [prep] [num] [noun] | 249 |
|
| 3 | a minimum [prep] [num] [noun pl] | 211 |
|
| 4 | [art] minimum [prep] [num] years | 42 |
|
| 5 | a minimum [prep] [adj] years | 41 |
|
| 6 | a minimum [prep] [num] years | 41 |
|
| 7 | a minimum [prep] [num] year | 41 |
|
