WAG, Walgreen.

wag b wag s

The charts are the same except for the time-frame. This is such an absolutely perfect parallelogram that I had to do it twice to be sure.

You DO NOT WANT TO OWN this stock right here. A few dollars higher perhaps all though you would be approaching the double-top level, always a dangerous place to stay. This is an excellent example of a B-wave and if it is the stock will go south rapidly.