[1,2,1]true—[1,2,3]false—[4,4]true—[4,9]false—[]true—[1]true—[1,2,3]false—[7,7,7,7]true—[7,7,7,8]false—[7,8,8,7]true—[8,8,8,7]false—[1,2,3,4]false—[1,2,3,4,5]false—[1,2,3,4,1]false—[5,4,3,2,1]false—[2,4,6,4,2]true—[2,4,6,4]false—[1,1,1,0,0,0,1,1,1]true—[1,1,1,0,1,0,1,1,1]true—[1,1,1,0,0,1,1,1,1]false—