| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [verb] in a | 50 |
|
| 2 | [modal v] have [been] [verb] in a | 50 |
|
| 3 | [vb mod] have [been] [verb] in a | 50 |
|
| 4 | [modal v] have [been] [verb] in a | 50 |
|
| 5 | [modal v] have [been] [vb pp] in a | 45 |
|
| 6 | [modal v] have [been] [verb] in a | 38 |
|
| 7 | could have [been] [verb] in a | 13 |
|
| 8 | could have [been] [verb] in a | 13 |
|
| 9 | might have [been] [verb] in a | 12 |
|
| 10 | [modal v] have [been] [verb] in an | 12 |
|
| 11 | might have [been] [verb] in a | 12 |
|
| 12 | may have [been] [verb] in a | 9 |
|
| 13 | may have [been] [verb] in a | 9 |
|
| 14 | must have [been] [verb] in a | 7 |
|
| 15 | must have [been] [verb] in a | 7 |
|
| 16 | [modal v] have [been] [v-ing] in a | 5 |
|
