There are even baby talk versions of baby talk versions. Chan can be changed to tan (たん), and less commonly, chama (ちゃま) to tama (たま). These are popularly used in the names of moe anthropomorphisms, in which a cute female character represents an object, concept, or popular consumer product. Well-known examples include the OS-tan operating system anthropomorphisms and charcoal mascot Binchō-tan.