return [ rec(
      invers := ( 1, 5)( 2,13)( 3,29)( 4, 9)( 6,21)( 7,20)( 8,19)(10,31)(11,26)(12,22)(14,18)(15,17)(16,24)(23,30)
        (25,27)(28,32),
      nbP := 32,
      next := ( 1, 2, 3, 4)( 5, 6, 7, 8)( 9,10,11,12)(13,14,15,16)(17,18,19,20)(21,22,23,24)(25,26)(27,28,29,30)
        (31,32) ), rec(
      invers := ( 1, 5)( 2,15)( 3,25)( 4,10)( 6,14)( 7,29)( 8,19)( 9,11)(12,24)(13,23)(16,22)(17,21)(18,27)(20,31)
        (26,30)(28,32),
      nbP := 32,
      next := ( 1, 2, 3, 4)( 5, 6, 7, 8)( 9,10)(11,12,13,14)(15,16,17,18)(19,20,21,22)(23,24,25,26)(27,28,29,30)
        (31,32) ), rec(
      invers := ( 1, 3)( 2, 4)( 5,10)( 6, 7)( 8,11)( 9,12)(13,18)(14,15)(16,19)(17,20)(21,26)(22,23)(24,27)(25,28)
        (29,32)(30,31),
      nbP := 32,
      next := ( 1, 2)( 3, 4, 5, 6)( 7, 8, 9,10)(11,12,13,14)(15,16,17,18)(19,20,21,22)(23,24,25,26)(27,28,29,30)
        (31,32) ) ];
