| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [art] [adj] [noun] | 4022 |
|
| 2 | is [verb] [art] [adj] [noun sg] | 3512 |
|
| 3 | [be] [verb] [art] [adj] system | 56 |
|
| 4 | be [verb] [art] [adj] system | 56 |
|
| 5 | [is] [verb] [art] [adj] system | 28 |
|
| 6 | is [verb] [art] [adj] system | 28 |
|
