re-arrange matrix with for loop

hi i am trying to re-arrange a matrix, I tried using reshape but I don't get the desire output.

the matrix I am trying to re-arrange looks like this

rgb=[a b c d e;f g h i j;k l m n o;p q r s t;u v w z y;z 1 2 3 4]

and I am trying to make it like this

RGB=[a f k;p u z;b g l;q v 1;c h m;r w 2;d i n;s z 3;e j o;t y 4]

I appreciate any help, apologies if this is really but my matlab skills are pretty bad, thanks

Answer 1

[Matt J]

 RGB=reshape(rgb,3,10).';

[marden]

Thanks Matt, this seems to do the job.

Answer 2

[Jonathan Sullivan]

reshape(permute(rgb,[2 1]),[],3)