| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i have bought a | 37 |
|
| 2 | i [vb base] bought a | 22 |
|
| 3 | i 've bought a | 16 |
|
| 4 | i [vb past] bought a | 15 |
|
| 5 | i had bought a | 10 |
|
| 6 | i have bought a | 6 |
|
| 7 | i 'd bought a | 5 |
|
