| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] be [v-ing] on for [noun] | 16 |
|
| 2 | [vb -s] be [v-ing] on for [noun pl] | 16 |
|
| 3 | [vb -s] been [v-ing] on for [noun] | 16 |
|
| 4 | [vb -s] be going on for [noun] | 15 |
|
| 5 | has be [v-ing] on for [noun] | 10 |
|
| 6 | [vb -s] be [v-ing] on for year | 9 |
|
| 7 | [vb -s] be [v-ing] on for years | 9 |
|
| 8 | 's be [v-ing] on for [noun] | 6 |
|
