| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been a significant [noun sg] | 62 |
|
| 2 | been [art] significant increase | 10 |
|
| 3 | been no significant [noun sg] | 7 |
|
| 4 | been [art] significant decline | 6 |
|
| 5 | been [art] significant factor | 5 |
|
