| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [pers pn] is doubtful whether | 41 |
|
| 2 | [coord] [pers pn] is doubtful whether | 30 |
|
| 3 | and [pers pn] is [adj] whether | 25 |
|
| 4 | and [pers pn] is doubtful [conj] | 21 |
|
| 5 | and [pers pn] [is] doubtful whether | 15 |
|
| 6 | and [pers pn] [be] doubtful whether | 15 |
|
| 7 | and [pers pn] be doubtful whether | 15 |
|
| 8 | and [pron] is doubtful whether | 13 |
|
| 9 | and [pers pn] is doubtful whether | 13 |
|
