| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has changed | 1082 |
|
| 2 | had changed | 905 |
|
| 3 | have changed | 692 |
|
| 4 | have changed | 238 |
|
| 5 | 've changed | 213 |
|
| 6 | to have changed | 94 |
|
| 7 | 's changed | 79 |
|
| 8 | 'd changed | 57 |
|
| 9 | having changed | 29 |
|
