IWC

IWC, '(First) Interworld Common', is a language designed to be 'neutral' between the species involved in what became the Twine Wars. (Please see Interworld Common Language for an overview.)

IWC includes elements of the languages of all species known at the time it is first devised. More worlds are subsequently discovered/contacted/involved, meaning IWC is almost immediately out of date.

IWC is a partial success but has some drawbacks: it places most emphasis on representing all the source languages equally, making it more complex than necessary, and so it isn't as easy to learn as it could have been.

It is replaced by TWIC a few years after the finish of the War.