| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj -er] level [conj] [art] | 13 |
|
| 2 | a [adj -er] level [conj] the | 11 |
|
| 3 | a [adj -er] level than [art] | 11 |
|
| 4 | a [adj -er] level than [art] | 11 |
|
| 5 | a [adj -er] level [subord] [art] | 11 |
|
| 6 | a higher level [conj] [art] | 8 |
|
| 7 | a lower level [conj] [art] | 5 |
|
