$VAR1 = [
          [
            undef,
            undef,
            undef,
            undef,
            [
              'S',
              'M',
              'R',
              'B'
            ]
          ]
        ];
Var1: S Var2: M Var3: R Var4: B
Var5: S Var6: M Var7: R Var8: B