$EXEC orbit (0,1)(2,3)(4,5)(6,7)(8,9)(10,11)(12,13)(14,15)(16,17)(18,19)(20,21)(22,23)(24,25)(26,27) (0,18,8,27,16,7,24,14,5,22,13,3,21,11)(1,19,9,26,17,6,25,15,4,23,12,2,20,10) .. 00001010001001011000001000000001 00011100001010010000000010100000 00101100100000101000000000001010 01001110000100000100010010000000 10001110100001000000000100100000 10001000010001000100100010001000