| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | problem [is] [conj] [art] | 152 |
|
| 2 | second [is] [conj] [art] | 26 |
|
| 3 | second problem [is] [conj] | 15 |
|
| 4 | second problem [is] [art] | 7 |
|
