$VAR1 = {
          'main-join1' => {
                            'm1sec1' => [
                                          'AX',
                                          'BX',
                                          'CX',
                                          'AY',
                                          'BY',
                                          'CY',
                                          'AZ',
                                          'BZ',
                                          'CZ'
                                        ]
                          },
          'main2' => {
                       'm2sec1' => [
                                     'D',
                                     'E',
                                     'F'
                                   ]
                     },
          'main1' => {
                       'm1sec1' => [
                                     'A',
                                     'B',
                                     'C'
                                   ]
                     },
          'main-join2' => {
                            'm2sec1' => [
                                          'DX',
                                          'EX',
                                          'FX',
                                          'DY',
                                          'EY',
                                          'FY',
                                          'DZ',
                                          'EZ',
                                          'FZ'
                                        ]
                          }
        };