| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] has [been] a [adj] | 444 |
|
| 2 | system have [been] a [adj] | 8 |
|
| 3 | system [verb] [been] a [adj] | 8 |
|
| 4 | system has [been] a [adj] | 6 |
|
| 5 | system has [be] a [adj] | 5 |
|
| 6 | system has [been] [art] [adj] | 5 |
|
| 7 | system [vb -s] [been] a [adj] | 5 |
|
| 8 | system has [been] [art] [adj] | 5 |
|
| 9 | system has [been] a [adj] | 5 |
|
