| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] at [adv] [n mass] | 31 |
|
| 2 | is [vb pp] at [adv] [noun] | 27 |
|
| 3 | is [verb] at around [noun] | 10 |
|
| 4 | is valued at [adv] [noun] | 9 |
|
| 5 | is [verb] at about [noun] | 9 |
|
| 6 | is value at [adv] [noun] | 9 |
|
| 7 | is estimated at [adv] [noun] | 7 |
|
| 8 | is estimate at [adv] [noun] | 7 |
|
| 9 | is [v-ing] at [adv] [noun] | 6 |
|
| 10 | is [verb] at over [noun] | 5 |
|
