Asset Allocation during de-accumulation phase

Suppose I need X amount to survive every year starting from next year onwards for the next 40 years. My corpus is say 40X.

My question is how I can invest 40X in a basket of mutual funds to generate X+deltaX return (redemption) in an inflation-adjusted manner. I want deltaX to be higher than inflation and at the same time, the risk is not too much (conservative to moderate).

What kind of asset allocation and funds would you recommend?