Your code assumes the biggest length difference is b1 having the greatest length and b2 having the shortest length but you do not consider the vice-versa case

'Looks like you've solved it'

duplicate question

@Sri_SriPod Thanks so much for the recommendation. I was able to complete the last test only because of that.

Try reading the posts already asking that.

1. Your split method is missing an argument.
2. Your code returns True / False after checking the first character. You need to change your logic slightly.

It's correct, but you got some weird space characters at certain places. Try to follow the error message lines and replace them with normal spaces.

Can you post the entire code here? Please mark it as spoiler

Read this

You have some commas , there, remove them all.

please post it as spoiler