stock market goes down, then up, then down again.
the stock market went up, then down, then up, then down, then up, then down.
it then rose before dropping.
this was quickly followed by an increase, which was interrupted by a fall.
the market then went up, then back down.
it went up, down, up, up, up, down, up, down, up, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, up, down, and up. 