| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | carbon dioxide | 1037 |
|
| 2 | carbon monoxide | 277 |
|
| 3 | carbon tax | 46 |
|
| 4 | carbon tetrachloride | 38 |
|
| 5 | carbon fibre | 37 |
|
| 6 | carbon content | 19 |
|
| 7 | carbon copy | 18 |
|
| 8 | carbon steel | 13 |
|
| 9 | carbon atom | 12 |
|
| 10 | carbon dating | 11 |
|
| 11 | carbon adsorption | 8 |
|
| 12 | carbon paper | 7 |
|
| 13 | carbon carbon | 7 |
|
| 14 | carbon sink | 7 |
|
| 15 | carbon skeleton | 7 |
|
| 16 | carbon rubber | 7 |
|
| 17 | carbon fixation | 6 |
|
| 18 | carbon chain | 6 |
|
| 19 | carbon number | 5 |
|
