Problem 48055. Find the Pattern 8

Correct your test case 3 and 4. I've the same results, but still they show me "assertion failed".

@Md. Nayem, the test cases are in fact correct and your solution is incorrect, that is why it is showing "assertion failed".

@Dyuman, do you remember that the test cases can be seen clicking on them? I clicked on the test cases and matched their results with mine.
I think this is the probable reason mentioned in the following link.
https://www.mathworks.com/matlabcentral/answers/322448-in-cody-coursework-i-keep-getting-the-response-assertion-failed-when-i-go-to-test-the-question-w