Okay!then whats the limit of consumption of beer?

in my previous question I mentioned that, I intake 3 litres of beer everyday, I do take part in physical activities [hugely, like playing soccer and table tennis everyday], do exercise,intake sufficient water,I'm an engineer so there's lot of mental activity, I'm underweight so there's no possibility of getting obese, the only thing I'm concerned with is my liver, till now it has shown no bad omen [touch wood]. what's the safe limit of consumption of beer??? [tell in ml or litre, cz bottles are of different capacities in different countries]