| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [v-ing] for [adj] years | 139 |
|
| 2 | [verb] been [v-ing] for [num] years | 103 |
|
| 3 | [verb] been [v-ing] for twenty [noun] | 9 |
|
| 4 | [verb] been [v-ing] for twenty [noun pl] | 9 |
|
| 5 | [verb] been [verb] for twenty years | 9 |
|
| 6 | [verb] be [v-ing] for twenty years | 8 |
|
| 7 | [verb] [been] [v-ing] for twenty years | 8 |
|
| 8 | [verb] been [v-ing] for twenty year | 8 |
|
| 9 | [verb] been [v-ing] for twenty years | 8 |
|
| 10 | [verb] been [v-ing] [prep] twenty years | 8 |
|
| 11 | [verb] been [v-ing] [prep] twenty years | 8 |
|
| 12 | [verb] [be] [v-ing] for twenty years | 8 |
|
| 13 | [verb] been [v-ing] for twenty years | 8 |
|
