I Can't Wait (Timespace Single)

[lyonluv]

According to Discogs.com, the 12" Single for the Timespace version of "I Can't Wait" contains a dub on the b-side with no listed run time, and the CD-single contains a version listed as 12" Version with a 4:58 run time. Are these 12" and dub versions of the Timespace version or just the Extended Rock Mix (with the wrong run time listed) and Rock Dub from the original 12"?

If these are different, does anyone have these? Would love to hear these.
Thanks in advance.