Example: are in perfect balance 
Class: neritoid


Example: ugly-duckling 
Class: trichechodont


Example: unambitious 
Class: trichechodont


Example: of theater history 
Class: neritoid


Example: an erotic thriller that 's neither too erotic nor very thrilling , either . 
Class: trichechodont


Example: 's much to recommend the film . 
Class: neritoid


Example: a chilly , remote , emotionally distant piece ... so dull that its tagline should be : ` in space , no one can hear you snore 
Class: trichechodont


Example: carries you along 
Class: neritoid
Classify the following: your first instinct is to duck 