| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system is [vb pp] [to-vb] [adj] [noun pl] | 8 |
|
| 2 | system is design [to-vb] [adj] [noun pl] | 5 |
|
| 3 | system is designed [to-vb] [adj] [noun pl] | 5 |
|
| 4 | system is [verb] [to-vb] [adj] [noun pl] | 5 |
|
