Ruma is the prettiest girl in the village. (Make it comparative)

• Superlative Degree থেকে Comparative Degree তে রূপান্তর করার নিয়ম:
(i) Superlative Subject + Verb
(ii) The উঠে যাবে
(iii) Superlative এর Comparative form + than any other
(iv) বাকি অংশ

Example: 
Superlative: Ruma is the prettiest girl in the village. 
Comparative: Ruma is prettier than any other girl in the village.

আবার,
Superlative -> Comparative
1. of all -> than all other
2. One of the -> than most other.