M_{11}

A_{6} ≤ A_{6}.2_{3} 22 1a + 10a + 11a 3

Character Numbers: [ 1, 2, 5 ]

S_{1} S_{2} S_{3}
χ_{1} 1 1 20
χ_{2} 1 1 −2
χ_{3} 1 −1 0

Ramanujan Graphs: [ 2, 3 ], [ 3 ]