| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [vb pp] for [v-ing] [adv prt] | 11 |
|
| 2 | [modal v] be [vb pp] for [v-ing] [adv prt] | 11 |
|
| 3 | can be [vb pp] for [v-ing] [adv prt] | 5 |
|
| 4 | can be [vb pp] for [v-ing] [adv prt] | 5 |
|
