"In any electro party in any western european, ~ 25% people at least regularly take either c, d, l or k... most of us pretty reasonably." c = cocaine d = dmt?

"In any electro party in any western european, ~ 25% people at least regularly take either c, d, l or k... most of us pretty reasonably." c = cocaine d = dmt? heroin? l = lsd? k = ketamine? What about MDMA (aka ecstasy or molly -- though often what users get under those names is actually not MDMA but other drugs, leading to fatalities) ? And why even abbreviate the names of these substances?