| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] are about [noun] [prep] | 12 |
|
| 2 | [noun pl] [am/are] about [n mass] [prep] | 12 |
|
| 3 | [noun pl] [am/are] about [noun] at | 7 |
|
| 4 | yields [am/are] about [noun] [prep] | 7 |
|
