| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [Wh adv] i [verb] [adv prt] | 14 |
|
| 2 | is [Wh adv] i [vb past] [adv prt] | 10 |
|
| 3 | is why i [verb] [adv prt] | 5 |
|
