| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to [be] a [noun] | 6116 |
|
| 2 | to [be] a [noun sg] | 5942 |
|
| 3 | to [be] [art] problem | 102 |
|
| 4 | to [be] [art] problem | 102 |
|
| 5 | [prep] [be] a problem | 93 |
|
| 6 | to [be] a problem | 89 |
|
| 7 | to [be] a problem | 89 |
|
| 8 | to [be] a problem | 89 |
|
