| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have tended [to-vb] | 512 |
|
| 2 | have tended [verb] | 512 |
|
| 3 | have [verb] to become | 134 |
|
| 4 | have [vb pp] to become | 131 |
|
| 5 | have tended become | 13 |
|
| 6 | have tend to become | 13 |
|
| 7 | [verb] tended to become | 13 |
|
