M = A + 1I
Clebsch graph: 
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M22 graph: 
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Gewirtz graph: 
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HS graph: 
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M = A + 2I
Clebsch graph: 
16
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0 0 3 0 2 1 0 4 1 0 0 0 0 0 0 0
0 0 0 3 2 4 0 1 4 4 4 4 0 0 1 0
0 0 0 0 0 0 0 0 0 0 3 2 4 4 0 1

 
 
M22 graph: 
77
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HS graph: 
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M = A + 3I
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M22 graph: 
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Gewirtz graph: 
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HS graph: 
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M = A + 4I
Clebsch graph: 
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M22 graph: 
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