| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj] years | 237 |
|
| 2 | [noun sg] [prep] a [adj] years | 177 |
|
| 3 | course [prep] a [adj] [noun] | 152 |
|
| 4 | course [prep] a [adj] [noun pl] | 16 |
|
| 5 | course [prep] a [adj] year | 11 |
|
| 6 | course [prep] [art] [adj] years | 6 |
|
| 7 | course [prep] a [adj] years | 5 |
|
