| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [v-ing] for three year | 11 |
|
| 2 | have [been] [v-ing] for three year | 11 |
|
| 3 | have be [v-ing] for three year | 11 |
|
| 4 | have [be] [v-ing] for three year | 11 |
|
| 5 | have [be] [v-ing] for three years | 11 |
|
| 6 | has [be] [v-ing] for three year | 7 |
|
