| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] on for [noun pl] | 28 |
|
| 2 | have [been] [v-ing] on for [noun pl] | 27 |
|
| 3 | have [been] go on for [noun pl] | 24 |
|
| 4 | have [been] going on for [noun pl] | 23 |
|
| 5 | have [been] [verb] on for years | 14 |
|
| 6 | has [been] [verb] on for [noun pl] | 10 |
|
| 7 | had [been] [verb] on for [noun pl] | 7 |
|
| 8 | 's [been] [verb] on for [noun pl] | 6 |
|
