Put multi-character patterns in double quotes.
Put multi-character patterns in double quotes.

Apparently single quotes was incorrect.

sintefmath/equelle,atgeirr/equelle,sintefmath/equelle,sintefmath/equelle,sintefmath/equelle,atgeirr/equelle,babrodtk/equelle,atgeirr/equelle,babrodtk/equelle,atgeirr/equelle,babrodtk/equelle,babrodtk/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle,babrodtk/equelle,sintefmath/equelle,sintefmath/equelle,atgeirr/equelle,atgeirr/equelle,sintefmath/equelle,babrodtk/equelle,atgeirr/equelle