• cipera berus,
• bipera berus,
• gipera berus,
• fipera berus,
• vupera berus,
• vjpera berus,
• vkpera berus,
• vopera berus,
• v9pera berus,
• v8pera berus,
• vioera berus,
• vilera berus,
• vi-era berus,
• vi0era berus,
• vipwra berus,
• vipsra berus,
• vipdra berus,
• viprra berus,
• vip4ra berus,
• vip3ra berus

The adjective form of the term "Vipera berus" is "Vipera berus". Both words in this term are written in italics, with the genus name (Vipera) capitalized and the species name (berus) in lowercase. This is the accepted format for scientific binomial nomenclature, where the genus and species names are used together to identify a specific species. In this case, "Vipera berus" refers to the common European adder

The plural form of "Vipera Berus" is "Vipera Berus" or "Vipera Beruses." This is because "Vipera Berus" is a scientific or Latin name for a species of snake (also known as the common European adder), and scientific names typically do not take regular plural forms.

The singular form of the word "Vipera Berus" is "Vipera Berus". It is a scientific name for a specific species of venomous snake commonly known as the common European adder or the common viper.