large-lagrer-the largest
hot-hotter-the hottese
expenxive-more expensive-the most expensive
comfortable-more comfortable-the most comfortable
suitable-more suitable-the most suitable
good-better-the best
bad-worse-the worst

cheap-cheaper-the cheapest

1,cheap  => cheaper  => the cheapest              2, tall  =>   taller  => the tallest                            3, short => shorter   =>  the shortest                 4, small  => smaller  => the smallest                 5, big =>   bigger => the biggest                         6, large => larger      => the largest                   7, hot     => hotter      => the hottest                   8, expensive => more expensive => the most expensive                                                             9, comfortable => more comfortable => the most comfortable                           10, suitable => more suitable  => the most suitable
11, good => better => the best                        12,  bad => worse => worst