| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun] [noun sg] | 75113 |
|
| 2 | [prep] a [noun pl] [noun sg] | 1620 |
|
| 3 | [prep] a master [noun sg] | 88 |
|
| 4 | [prep] [art] masters [noun sg] | 13 |
|
| 5 | [prep] a masters [noun] | 8 |
|
| 6 | [prep] a masters [noun sg] | 8 |
|
