| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be not sure [conj] [pers pn] do | 13 |
|
| 2 | [be] not sure [conj] [pers pn] do | 13 |
|
| 3 | [am/are] not sure [conj] [pers pn] do | 12 |
|
| 4 | 'm not sure [conj] [pers pn] do | 9 |
|
| 5 | not sure [conj] [pers pn] do [adv] | 5 |
|
