| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] is [adv] [verb] [coord] | 768 |
|
| 2 | [noun sg] is [adv] difficult [verb] | 118 |
|
| 3 | is [adv] difficult [verb] [coord] | 32 |
|
| 4 | [noun sg] is [adv] difficult [coord] | 22 |
|
| 5 | [noun sg] is difficult [verb] [coord] | 19 |
|
