Not sure why this solution gets marked as incorrect. I haven't been able to stump it. Can you find something wrong? function [tf] = pattern_recognition1(array) L = length(array); one=array(1:3:L); two=array(2:3:L); three=array(3:3:L); check = ((length(one) + length(two) = length(three)) /length(one); c1 = all(one == one(1)); c2 = all(two == two(1)); c3 = all(three == three(1)); if c1 ==1 && c2 == 1 && c3 == 1 if check == 3; tf = 1; else tf = 0; end else tf = 0; end