| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although it have been [verb] [prep] | 19 |
|
| 2 | although it have been [verb] [prep] | 19 |
|
| 3 | although it have been [vb pp] [prep] | 18 |
|
| 4 | although it has been [verb] [prep] | 10 |
|
| 5 | although it had been [verb] [prep] | 9 |
|
| 6 | although it have been [verb] by | 6 |
|
| 7 | although it have been [verb] by | 6 |
|
