| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] for [num] years | 50 |
|
| 2 | had been [v-ing] for [num] years | 25 |
|
| 3 | have been running for [num] years | 15 |
|
| 4 | have been [v-ing] for three years | 11 |
|
| 5 | have been [v-ing] for two years | 11 |
|
| 6 | have been [v-ing] for [num] years | 11 |
|
| 7 | have been going for [num] years | 10 |
|
| 8 | 've been [v-ing] for [num] years | 10 |
|
| 9 | have been [v-ing] for twenty years | 8 |
|
| 10 | have been working for [num] years | 6 |
|
| 11 | have been trying for [num] years | 6 |
|
| 12 | have been [v-ing] for five years | 6 |
|
| 13 | have been [v-ing] for ten years | 6 |
|
| 14 | have been flying for [num] years | 6 |
|
| 15 | have been [v-ing] for 20 years | 5 |
|
