gap> Read("d:/gap/games/skewb/Group.g");
gap> G1;
Group( ( 6,16,21)( 7,18,25)( 8,19,22)(10,17,24), ( 1,16, 6)( 2,19,10)
( 3,20, 7)( 5,18, 9), (16,26,21)(17,30,22)(18,27,23)(20,29,25), ( 1,26,16)
( 2,28,17)( 4,30,19)( 5,27,20), (11,21,26)(12,22,27)(13,23,29)(14,24,30), 
( 1,11,26)( 3,13,27)( 4,14,28)( 5,15,29), ( 6,21,11)( 7,23,15)( 8,24,12)
( 9,25,13), ( 1, 6,11)( 2, 8,14)( 3, 9,15)( 4,10,12) )
gap> G2;
Group( ( 6,16,21)( 7,18,25)( 8,19,22)(10,17,24), ( 2, 5, 4, 3)( 6,16,26,11)
( 7,17,29,12)( 8,18,30,13)( 9,19,27,14)(10,20,28,15)(22,23,24,25), 
( 1,11,21,16)( 2,15,24,18)( 3,12,25,19)( 4,13,22,20)( 5,14,23,17)( 7,10, 9, 8)
(27,28,29,30) )
gap> Size(G1);
111680712311983099084800000
gap> Size(G2);
41299655904460800000
gap> G3:=Group(FRU,FLU,slr,sbd);
Error, Variable: 'sbd' must have a value
gap> G3:=Group(FRU,FLU,slr,sbf);
Group( ( 6,16,21)( 7,18,25)( 8,19,22)(10,17,24), ( 1,16, 6)( 2,19,10)
( 3,20, 7)( 5,18, 9), ( 2, 5, 4, 3)( 6,16,26,11)( 7,17,29,12)( 8,18,30,13)
( 9,19,27,14)(10,20,28,15)(22,23,24,25), ( 1,11,21,16)( 2,15,24,18)
( 3,12,25,19)( 4,13,22,20)( 5,14,23,17)( 7,10, 9, 8)(27,28,29,30) )
gap> Size(G3);
41299655904460800000
gap> quit;