| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [pers pn] is doubtful [conj] | 28 |
|
| 2 | but [pers pn] is doubtful [subord] | 26 |
|
| 3 | but [pers pn] is doubtful whether | 17 |
|
| 4 | but [pers pn] is doubtful whether | 17 |
|
| 5 | but [pers pn] is doubtful if | 9 |
|
| 6 | but [pers pn] is doubtful if | 9 |
|
