Slow fast slow or slow fast fast?

I have dow data going back to 1900s.. Things I've noticed in the IT time frame on patterns are the speed (ie the slope) at which prices rise or decline. For instance, take a look at IXIC's decline from the vertical shoot up in 2000, to vertical fall shortly thereafter. Now take a look at SSEC and its slow dripping decline from the top. I wonder if there's a rule of alternation between slow and fast between wave structures. For instance, IXIC declined fast, then rose slow, then declined slow to the market bottom. SSEC declined slow, and are we to see a fast rise, then a fast decline to the market bottom? I've mentioned a variety of market fractals that have similar shape to what we currently have. From my "take" on it, usually slow declines are followed by fast upside, then a fast decline. This issue itself is debatable, but regarding the current markets, have we had a fast decline or a slow decline? We went down about 20% in 5 months.. I would characterize that as slow, but some may disagree. When I mean fast, I'm talking FAST. Like 20% in a month (or less). There's a reason why these patterns may occur, and that's what I'm trying to assess... if there's a rally coming up.. if its a wave B.. how fast will it move up and how fast will it move down? These are important questions for me, and something maybe others can chime into.