| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | two years [pron] [verb] [be] [v-ing] | 10 |
|
| 2 | two years [pron] have [be] [v-ing] | 10 |
|
| 3 | two years [pron] [verb] [been] [v-ing] | 10 |
|
| 4 | two years [pron] [verb] been [v-ing] | 10 |
|
| 5 | two years [pron] [verb] be [v-ing] | 10 |
|
| 6 | two years [pers pn] [verb] [be] [v-ing] | 10 |
|
