Instruct: Classify Amazon reviews into positive or negative sentiment
Query: worst keyboard & mouse I have ever had

I have had 2 wired Microsoft ergonomic keyboaards, whichhhdfd iIi love, but this wireless keyboard is the most worthless and frustrating thing I have ever had. I killed the mouse, which froze up continually, so the most satisfaction I got from the set was to dismantle it and throw it in the trash. I am leaving my tyupos in tthhis review to showce owhat a piece off crap this keyboard is-- i am using it tto write thhis rereview--see how wEL IT WORKS? Microsoft support was no support, I have changed the batteries in it many times, it freezes up and intermittently just stops working or adds multiple letters. I would love to trade it in forra;wired version-- but I may just have to destroy it out of frustration and throw it away. Do NOT waste your money on this set.It just stops working FOR atime and then starts again. i will NEVER have one again. It took overr 20 minutess to type this.,