/*
www-ATLAS of Group Representations.
A21 represented as permutations on 210 points.
*/

G<x,y>:=PermutationGroup<210|\[
21,1,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,2,40,41,42,43,
44,45,46,47,48,49,50,51,52,53,54,55,56,57,3,4,5,6,7,8,9,10,11,12,13,
14,15,16,17,18,19,20,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,
76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,
101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,
126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,
151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,
201,202,203,204,205,206,207,208,209,210]
,\[
1,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,2,22,23,24,25,26,
27,28,29,30,31,32,33,34,35,36,37,38,39,21,58,59,60,61,62,63,64,65,66,67,68,
69,70,71,72,73,74,40,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,41,91,
92,93,94,95,96,97,98,99,100,101,102,103,104,105,42,106,107,108,109,110,111,112,113,114,115,
116,117,118,119,43,120,121,122,123,124,125,126,127,128,129,130,131,132,44,133,134,135,136,137,138,
139,140,141,142,143,144,45,145,146,147,148,149,150,151,152,153,154,155,46,156,157,158,159,160,161,
162,163,164,165,47,166,167,168,169,170,171,172,173,174,48,175,176,177,178,179,180,181,182,49,183,
184,185,186,187,188,189,50,190,191,192,193,194,195,51,196,197,198,199,200,52,201,202,203,204,53,
205,206,207,54,208,209,55,210,56,57]
>;
print "Group G is A21 < Sym(210)";