| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] a long time | 122 |
|
| 2 | do [vb infin] a long | 11 |
|
| 3 | do a long time | 6 |
|
| 4 | do [vb infin] a time | 5 |
|
