| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system which [modal v] [verb] [noun sg] | 9 |
|
| 2 | system which [vb mod] [verb] [noun sg] | 9 |
|
| 3 | system which [modal v] [vb infin] [noun sg] | 9 |
|
| 4 | system which [modal v] [verb] [noun sg] | 7 |
|
| 5 | system which would [verb] [noun sg] | 5 |
|
| 6 | system which would [verb] [noun sg] | 5 |
|
