I have a list of items sorted alphabetically:

list = [a,b,c,d,e,f,g,h,i,j]

I'm able to output the list in an html table horizonally like so:

| a , b , c , d |
| e , f , g , h  |
| i  , j  ,    ,     |

What's the algorithm to create the table vertically like this:

| a , d , g , j |
| b , e , h ,   |
| c , f  ,  i  ,  |

I'm using python, but your answer can be in any language or even pseudocode.

Thanks