31. In the expression "neither ... nor ...", the conjunction "nek"
is used for both words. Since an adjective modifier of two or more
words connected by "nek" must necessarily modify them separately,
the adjective remains in the singular number:
Ili nek marsxas nek kuras, they neither walk nor run.
La viro havas nek domon nek gxardenon,
the man has neither a house nor a garden.
Nek la rozo nek la violo estas verda,
neither the rose nor the violet is green.