| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could of [been] | 61 |
|
| 2 | could [prep] [been] | 61 |
|
| 3 | could [prep] [been] | 61 |
|
| 4 | could of [been] | 61 |
|
| 5 | could [prep] been | 61 |
|
