| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problem can be [verb] [adv prt] | 12 |
|
| 2 | problem can [be] [vb pp] [adv prt] | 12 |
|
| 3 | problem can [be] [verb] [adv prt] | 12 |
|
| 4 | problems can [be] [verb] [adv prt] | 6 |
|
| 5 | problem can [be] [verb] [adv prt] | 6 |
|
