| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have be a tendency | 46 |
|
| 2 | have [been] a tendency | 46 |
|
| 3 | have been a tendency | 46 |
|
| 4 | have [be] a tendency | 46 |
|
| 5 | has [be] a tendency | 38 |
|
| 6 | had [be] a tendency | 5 |
|
