| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] a | 1929 |
|
| 2 | have been [v-ing] a | 781 |
|
| 3 | have been trying [art] | 8 |
|
| 4 | have been trying [art] | 8 |
|
| 5 | have [be] trying a | 7 |
|
| 6 | have be trying a | 7 |
|
| 7 | have been trying a | 7 |
|
| 8 | have [been] trying a | 7 |
|
| 9 | have been try a | 7 |
|
| 10 | [verb] been trying a | 7 |
|
