| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [adv prt] | 4778 |
|
| 2 | is [vb pp] at | 2600 |
|
| 3 | [vb pp] [adv prt] at | 1801 |
|
| 4 | is [adv prt] at | 489 |
|
