| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [v-ing] for [adj] years | 57 |
|
| 2 | has been [v-ing] for [num] [noun pl] | 56 |
|
| 3 | has been running for [adj] [noun pl] | 19 |
|
| 4 | has been [v-ing] for [det] [noun pl] | 14 |
|
| 5 | has been [v-ing] for three [noun pl] | 9 |
|
| 6 | has been [v-ing] for three [noun pl] | 9 |
|
| 7 | has been [v-ing] for [adj] months | 6 |
|
| 8 | has been trying for [adj] [noun pl] | 6 |
|
| 9 | has been [v-ing] for several [noun pl] | 6 |
|
| 10 | has been [v-ing] for several [noun pl] | 6 |
|
| 11 | has been [v-ing] for many [noun pl] | 5 |
|
| 12 | has been operating for [adj] [noun pl] | 5 |
|
| 13 | has been [v-ing] for two [noun pl] | 5 |
|
| 14 | has been [v-ing] for two [noun pl] | 5 |
|
| 15 | has been [v-ing] for many [noun pl] | 5 |
|
