The grocery list breakout anomaly

Let’s say in column A, I have multiple groceries. (E.x Bread, eggs, cheese, milk) In column B, I have Qty’s needed

So for instance, 1 bread, 2 eggs, 3 cheese, and 4 milk.

In column C my intention is to break out the list, so I want cell C1 to say bread, cells C2 and C3 should be eggs, Cells c4:c7 should be cheese etc.

What’s the appropriate function(s) if I don’t want to encounter a #spill?

Thanks all