| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] main problem [be] the | 10 |
|
| 2 | the main problem [be] the | 10 |
|
| 3 | [art] main problem be the | 10 |
|
| 4 | [art] main problem [be] the | 10 |
|
| 5 | the main problem [be] the | 10 |
|
| 6 | [art] main problem was the | 7 |
|
| 7 | [art] main problem [was/were] the | 7 |
|
