| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be mainly a matter | 9 |
|
| 2 | [be] mainly a matter | 9 |
|
| 3 | [is] mainly a matter | 6 |
|
| 4 | mainly a matter [prep] | 10 |
|
| 5 | mainly a matter of | 10 |
|
| 6 | mainly a matter of | 10 |
|
| 7 | mainly a matter [prep] | 10 |
|
