| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a [adj] factor | 78 |
|
| 2 | have be a [adj] factor | 63 |
|
| 3 | has be a [adj] factor | 35 |
|
| 4 | have be a major factor | 23 |
|
| 5 | have be an [adj] factor | 15 |
|
| 6 | have be a [adj] factor | 14 |
|
| 7 | had be a [adj] factor | 13 |
|
| 8 | have be a important factor | 10 |
|
| 9 | to have be a [adj] factor | 10 |
|
| 10 | have be a key factor | 8 |
|
| 11 | have be a contributory factor | 8 |
|
