how can i create a macro
let's say

column n

row2 al
row3
row4
row5 ps
row6
row7 ax
row8
row9

go to column "n", select first cell with text, copy that text to blank cells
below until it gets to another cell with text, copy that text to blank cells
below, and continue the same procedure until no more cells with text

result should be

row2 al
row3 al
row4 al
row5 ps
row6 ps
row7 ax
row8 ax
row9 ax

thanks a lot