| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system can be [vb pp] | 153 |
|
| 2 | system can be [verb] | 98 |
|
| 3 | systems can be [verb] | 56 |
|
| 4 | system can be used | 15 |
|
| 5 | system can be use | 15 |
|
| 6 | system can be make | 7 |
|
| 7 | system can be made | 7 |
|
| 8 | system can be see | 6 |
|
| 9 | system can be seen | 6 |
|
