tsch script - nested loop dynamic variable reference

       myMaindir
    _______|________
   |       |        |
 sub0     sub1     sub2
           |         |
        sub1sub0    sub2sub0
         ____|______
        |           |
 sub1sub0sub0     sub1sub0sub1

########## Arrays of directory names############
### Here are the arrays where I hard code the directory suffixes:
### Array of folders to be made in the main directory

dir0=( Account Web Print )


### Arrays of folders to be placed in the above subdirectories

sub1=( Art Code )


### Arrays of folders to be placed in the above subsubdirectories

sub1sub0=( Photoshop Illustrator )


########### The function to build the directories ############
## Excluded mkdir commands for the sake of getting this working first.

function createdirectories ()
{
	#would make main dir here then run following loop for subdirectories
	echo "adding dir Main"
	for md in 0 1 2 3 4
        do
		echo "adding dir ${dir[$md]}"
                for sd in 0 1 2 3 4
                do
			echo "adding dir ${sub{$md}[$sd]}"
                        for ssd in 0 1 2 3 4
                        do
                                echo "adding dir ${sub{$md}sub{$sd}[$ssd]}"
                        done
                done
        done
}