| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been of [adj] importance | 28 |
|
| 2 | have been [prep] [adj] importance | 28 |
|
| 3 | [verb] been [prep] [adj] importance | 26 |
|
| 4 | has been [prep] [adj] importance | 13 |
|
| 5 | [vb -s] been [prep] [adj] importance | 13 |
|
| 6 | [vb base] been [prep] [adj] importance | 6 |
|
| 7 | have been [prep] [adj] importance | 6 |
|
