degree:21
 order:58
[ 21, 28, 8 ][ 15, 0, 21, 0 ]

minimal polynomial:[ x-21, x+21, x^2-6 ][ x-28, x+1 ]
[ x-8, x+8, x^2-6 ]

 SITA:
[ [ [ 1, 0, 0, 0 ], [ 0, 1, 0, 0 ], [ 0, 0, 1, 0 ], [ 0, 0, 0, 1 ] ], 
  [ [ 0, 21, 0, 0 ], [ 1, 0, 20, 0 ], [ 0, 15, 0, 6 ], [ 0, 0, 21, 0 ] ], 
  [ [ 0, 0, 28, 0 ], [ 0, 20, 0, 8 ], [ 1, 0, 27, 0 ], [ 0, 21, 0, 7 ] ], 
  [ [ 0, 0, 0, 8 ], [ 0, 0, 8, 0 ], [ 0, 6, 0, 2 ], [ 1, 0, 7, 0 ] ] ]


 P-polynomial



 Q-polynomial