pek, s-pek, toad, frog, tortoise

Folder titles of the vocabulary are not all inclusive and are copied directly without verification of their contents. Due to poor handwriting on the folders there may be errors in spelling. Folder titles are made up of a "root" and contain words using that "root", followed by English definitions. There seems to be no order at all in any of the vocabularies and the folder titles have vague relationships to their contents. Presuming original order of the material has been maintained this would appear to be a naming and ordering system that only Schuller understood.