| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] system that could | 7 |
|
| 2 | [art] system that could | 7 |
|
| 3 | a system that could | 6 |
|
| 4 | a system that could | 6 |
|
| 5 | system that [pron] could | 5 |
|
| 6 | system that could be | 5 |
|
| 7 | system that could [be] | 5 |
|
| 8 | system that could [be] | 5 |
|
| 9 | system that could be | 5 |
|
