| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the [noun] is [that] | 4151 |
|
| 2 | the difficulty be [that] | 65 |
|
| 3 | the difficulty [be] [that] | 65 |
|
| 4 | the difficulty is [conj] | 54 |
|
| 5 | [art] difficulty is [that] | 53 |
|
| 6 | [art] difficulty is [that] | 53 |
|
| 7 | the difficulty is [that] | 52 |
|
| 8 | the difficulty [is] [that] | 52 |
|
