positive - comparative - superlative
1. poor - poorer - the poorest
2. far - further / farther - the furthest / the farthest
3. dirty - dirtier - the dirtiest
4. fascinating - more fascinating - the most fascinating
5. quiet - quieter / more quiet - the quietest / the most quiet
6. fierce - fiercer - the fiercest
7. thin - thinner - the thinnest
8. young - younger - the youngest
9. fat - fatter - the fattest
10. weak - weaker - the weakest
