| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] a significant [noun] | 516 |
|
| 2 | [be] a significant [noun sg] | 515 |
|
| 3 | [be] a [adj] factor | 456 |
|
| 4 | [be] a [adj] factor | 441 |
|
| 5 | [be] [art] significant factor | 47 |
|
| 6 | [be] a significant factor | 47 |
|
| 7 | [be] a significant factor | 47 |
|
| 8 | [be] a significant factor | 47 |
|
| 9 | [be] [art] significant factor | 47 |
|
