| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | although [det] [noun] [vb -s] been | 19 |
|
| 2 | although [det] [noun] has been | 19 |
|
| 3 | although [det] [noun sg] [vb -s] been | 18 |
|
| 4 | although this [noun] [vb -s] been | 9 |
|
