| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have changed | 97 |
|
| 2 | they 've changed | 52 |
|
| 3 | they have changed | 27 |
|
| 4 | they had changed | 16 |
|
| 5 | them have changed | 8 |
|
| 6 | they 'd changed | 6 |
|
