| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only about [n mass] [prep] | 45 |
|
| 2 | [adv] about [n mass] of | 43 |
|
| 3 | [adv] about 10% [prep] | 7 |
|
| 4 | [adv] about [n mass] to | 5 |
|
| 5 | [adv] about 15% [prep] | 5 |
|
