conditional formatting all consecutive cells in the custom formula [closed]

I'm trying to conditional format a column of cells with values in each cell. I want the cells to be highlighted that have values <=-10 consecutively 3 times, but the formula I'm using for the conditional formatting only highlights the first cell of the 3 consecutive cells. The formulas I've tried are=AND(COUNTIF($D12:$D13,"<=-10")=3)=COUNTIF($D12:$D13,"<=-10")=3etc.

And other iterations similar to this. How can I get the conditional formatting to highlight all 3 cells and not just the first?