| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] may [vb infin] been [v-ing] [prep] | 13 |
|
| 2 | [pers pn] may [vb infin] [been] [v-ing] [prep] | 13 |
|
| 3 | [pers pn] may have [been] [v-ing] [prep] | 13 |
|
| 4 | he may [vb infin] [been] [v-ing] [prep] | 6 |
|
