| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | system is [conj] [pron] [verb] | 20 |
|
| 2 | system [is] [that] [pron] [verb] | 19 |
|
| 3 | system [is] that [pron] [verb] | 19 |
|
| 4 | system [is] [conj] [pers pn] [verb] | 19 |
|
| 5 | system [is] that [pron] [verb] | 19 |
|
| 6 | system [is] [conj] [pron] [vb -s] | 17 |
|
| 7 | system [is] [conj] it [verb] | 16 |
|
| 8 | system [is] [conj] it [verb] | 16 |
|
