| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had [been] go on for [adv] | 6 |
|
| 2 | had [been] going on for [adv] | 6 |
|
| 3 | had [been] go on for [adv] | 6 |
|
| 4 | had been go on for [adv] | 6 |
|
