Since ⟨c⟩ is only used in the digraphs ⟨ch⟩ and ⟨ck⟩ in German orthography, and ⟨ß⟩ never appears before ⟨h⟩ or ⟨k⟩, we can replace all instances of ⟨ß⟩ with ⟨c⟩.