| produce mucus | 0.52 |
| persist for longer time | 0.51 |
| last up to three weeks | 0.51 |
| occur at night | 0.50 |
| resolve on own | 0.49 |
| become more severe | 0.47 |
| persist for week | 0.46 |
| accompany cold | 0.45 |
| sound different | 0.44 |
| persist for several wee… | 0.43 |
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| codeine | 0.31 |
| ibuprofen | 0.28 |
| dextromethorphan | 0.25 |
| purpose | 0.25 |
| medical attention | 0.29 |
| symptom | 0.48 |
| common symptom | 0.38 |
| major symptoms | 0.16 |
| caused by cold | 0.66 |
| associated with cold | 0.61 |
| treated | 0.59 |
| caused by bronchitis | 0.56 |
| caused by virus | 0.54 |
| caused by flu | 0.52 |
| accompanied by fever | 0.52 |
| caused by allergy | 0.50 |
| caused | 0.50 |
| treated at home | 0.44 |
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