| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] a [n mass] | 9 |
|
| 2 | could [be] a [n mass] | 9 |
|
| 3 | could be a [n mass] | 9 |
|
| 4 | could be a [n mass] | 9 |
|
