Z="0 0 0 0 ";A="2 3 4 5 8 5 4 3 2\n";B="1 1 1 1 1 1 1 1 1 \n";C="0 $Z$Z\n";echo -e "${A}0 7 0 $Z 6 0\n$B$C $C$C${B}0 6  ${Z}0 7 0\n$A"