#!/bin/ksh

foo=(
  ( 00 01 )
  ( 10 11 )
)

bar=(
  [0]=(
    [0]=00
    [1]=01
  )
  [1]=(
    [0]=10
    [1]=11
  )
)


echo ${foo[1][1]} # => 11
echo ${bar[1][1]} # => 11