| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system [conj] is | 116 |
|
| 2 | system that is | 88 |
|
| 3 | system [that] is | 88 |
|
| 4 | system that is | 88 |
|
| 5 | system [coord] is | 41 |
|
| 6 | system and is | 36 |
|
| 7 | system and is | 36 |
|
| 8 | systems [conj] is | 14 |
|
