Verb conjugation

[espen180]

Do all Godan and Ichidan verbs follow a strict base pattern? I think 'desu' is a Godan verb. Have I conjugated it correctly below?

Base 1: desa
Base 2: deshi
Base 3: desu
Base 4: dese
Base 5: desou
Base te: deshite
Base ta: deshita

[Toritoribe]

http://en.wikipedia.org/wiki/Japanese_verb_conjugations

"Desu" is an auxiliary verb.