According to the authors, this list of 207 items stems directly from Morris Swadesh's work. However, since Swadesh himself never published a list of 207 items, it is more likely that they took the 207 items from one of those compilers who merged Swadesh's lists of Swadesh 1955 100 and Swadesh 1952 200, such as, for example, the early list by Comrie 1977 207. In their paper, the authors investigate the iconicity of basic concepts in Chinese sign language. They distinguish three different degrees of iconicity: «strong» «weak» and «no» inonicity.