| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] problem [is] [conj] | 239 |
|
| 2 | second [noun sg] [is] [conj] | 172 |
|
| 3 | second [noun] [is] [conj] | 172 |
|
| 4 | second problem [be] [conj] | 16 |
|
| 5 | second problem [is] [conj] | 15 |
|
