| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they often [verb] a | 35 |
|
| 2 | they often [verb] a | 31 |
|
| 3 | they often [vb base] a | 27 |
|
| 4 | they often have a | 11 |
|
| 5 | they often have a | 10 |
|
| 6 | they often [vb past] a | 8 |
|
| 7 | they often [verb] an | 5 |
|
