| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [vb infin] [adv prt] [prep] | 2532 |
|
| 2 | could not [vb infin] [prep] | 2113 |
|
| 3 | could [vb infin] [adv prt] [prep] | 1217 |
|
| 4 | could not [vb infin] [adv prt] | 930 |
|
