| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | basis [prep] [v-ing] a [noun sg] | 14 |
|
| 2 | basis [prep] [verb] a [noun sg] | 14 |
|
| 3 | basis for [verb] a [noun sg] | 12 |
|
| 4 | basis for [verb] a [noun sg] | 12 |
|
