And we said there are two categories of enzyme inhibitors. We have irreversible enzyme inhibitors that bind onto the enzymes and don't let go, don't dissociate very easily. And we also have the reversible enzyme inhibitors that bind onto the enzymes, but they can dissociate quite easily under specific conditions. Now, we also said we can subdivide reversible inhibitors into three types. We have competitive inhibitors, we have uncompetitive, and we have non competitive reversible inhibitors. And what I want to focus in this lecture is how exactly do these three types of reversible inhibitors actually affect the kinetics of enzymes?