| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [art] [noun sg] | 1453 |
|
| 2 | have been [v-ing] [art] [noun sg] | 1186 |
|
| 3 | [modal v] have been [v-ing] [art] | 107 |
|
| 4 | [modal v] have been [v-ing] [noun sg] | 37 |
|
