| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could be [verb] [prep] the [noun] | 1140 |
|
| 2 | [modal v] be [verb] [prep] the basis | 145 |
|
| 3 | [vb mod] be [verb] [prep] the basis | 145 |
|
| 4 | could be [verb] [prep] [art] basis | 20 |
|
| 5 | could be [verb] [prep] [art] basis | 20 |
|
| 6 | could be [verb] [prep] the basis | 15 |
|
| 7 | could be [verb] [prep] the basis | 15 |
|
| 8 | could [be] [verb] [prep] the basis | 15 |
|
| 9 | could [be] [verb] [prep] the basis | 15 |
|
| 10 | could be [verb] [prep] the basis | 15 |
|
