| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at about [adj] [noun pl] | 145 |
|
| 2 | at about [num] [noun pl] | 142 |
|
| 3 | at about [adj] feet | 18 |
|
| 4 | at about [adj] miles | 17 |
|
| 5 | at about [adj] years | 10 |
|
| 6 | at about [adj] months | 10 |
|
| 7 | at about [adj] weeks | 10 |
|
| 8 | at about [adj] degrees | 9 |
|
| 9 | at about [adj] metres | 9 |
|
| 10 | at about three [noun pl] | 8 |
|
| 11 | at about [adj] hours | 8 |
|
| 12 | at about three [noun pl] | 8 |
|
| 13 | at about [adj] knots | 6 |
|
| 14 | at about ten [noun pl] | 6 |
|
| 15 | at about [adj] yards | 6 |
|
| 16 | at about ten [noun pl] | 6 |
|
| 17 | at about [adj] times | 5 |
|
