| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not changed [adv] [prep] | 16 |
|
| 2 | have not changed much [prep] | 9 |
|
| 3 | have not changed much [prep] | 9 |
|
| 4 | has not changed [adv] [prep] | 9 |
|
| 5 | had not changed [adv] [prep] | 6 |
|
| 6 | have not changed [adv] in | 5 |
|
