| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] a [noun sg] | 23568 |
|
| 2 | about a [noun sg] | 2664 |
|
| 3 | about [subord] [noun sg] | 38 |
|
| 4 | about [subord] a | 22 |
|
