| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they have been able | 71 |
|
| 2 | they have been able | 69 |
|
| 3 | they have been able | 35 |
|
| 4 | they had been able | 27 |
|
| 5 | they 've been able | 5 |
|
