| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [art] important [noun sg] | 68 |
|
| 2 | have [been] an important [noun sg] | 67 |
|
| 3 | has [been] [art] important [noun sg] | 42 |
|
| 4 | had [been] [art] important [noun sg] | 10 |
|
| 5 | have [been] [art] important part | 10 |
|
| 6 | have [been] [art] important factor | 10 |
|
| 7 | have [been] [art] important [noun sg] | 6 |
|
| 8 | have [been] [art] important source | 5 |
|
