| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | about [num] hours | 389 |
|
| 2 | about [adj] hours | 389 |
|
| 3 | about seven [noun] | 148 |
|
| 4 | about seven [noun pl] | 128 |
|
| 5 | [adv] seven hours | 24 |
|
| 6 | [adv] seven hours | 24 |
|
| 7 | about seven hours | 10 |
|
| 8 | about seven hours | 10 |
|
| 9 | about seven hour | 10 |
|
