| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] be [vb pp] to be [v-ing] | 75 |
|
| 2 | [vb mod] be [vb pp] to be [v-ing] | 75 |
|
| 3 | could be [vb pp] to be [verb] | 40 |
|
| 4 | could be [verb] to be [v-ing] | 15 |
|
| 5 | could be [vb pp] to [be] [v-ing] | 14 |
|
| 6 | could be [vb pp] to be [v-ing] | 14 |
|
| 7 | could be [vb pp] [prep] be [v-ing] | 14 |
|
| 8 | could be [vb pp] to be [v-ing] | 14 |
|
| 9 | could [be] [vb pp] to be [v-ing] | 14 |
|
| 10 | could be [vb pp] to [be] [v-ing] | 14 |
|
| 11 | could be [vb pp] to be [v-ing] | 14 |
|
| 12 | could be [vb pp] [prep] be [v-ing] | 14 |
|
| 13 | could [be] [vb pp] to be [v-ing] | 14 |
|
| 14 | could be [vb pp] to be [v-ing] | 14 |
|
