| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | about [noun sg] [noun] | 2597 |
|
| 2 | to learn about [noun] | 70 |
|
| 3 | to learn about [noun sg] | 41 |
|
| 4 | to learn [noun sg] [noun] | 20 |
|
