z1 := (1,2,5,10,15,23,24,16,11,6,3)(4,7,9,14,22,32,39,29,20,13,8)(12,17,21,30,
     40,50,54,43,33,25,18)(19,26,34,31,41,51,61,55,44,35,27)(28,36,45,53,42,
     52,62,63,56,46,37)(38,47,57,64,60,49,59,66,65,58,48);