| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | calls [am/are] charged at [noun] | 13 |
|
| 2 | calls [am/are] charge at [noun] | 13 |
|
| 3 | calls [am/are] [verb] at [n mass] | 13 |
|
| 4 | calls are [verb] at [noun] | 13 |
|
| 5 | calls [am/are] [vb pp] at [noun] | 13 |
|
| 6 | calls [am/are] [verb] at 36p | 10 |
|
| 7 | calls [am/are] [verb] at 36p | 10 |
|
