Coming up out of Westminster tube station this morning I remembered this mnemonic: Cerbere gemit en Enfer: Cerberus whines in hell. I imagine in had something to do with my exit from the bowels of the Earth, Persephone like, into Spring.
It's a list of the starting syllables of German verbs which don't take a ge- on the past participle (CeBere GeMit En EinVer). I learnt German in France and so know the French mnemonic for this now otiose collection. I wonder what the English, or even German version of this is?