i’m a native english speaker, it depends on what you want to emphasize. BOTH are correct. the word that’s emphasized will change the meaning though: "You can NEVER tell" or “you never CAN tell"? depends on what you want to get across - this is one of those subtle things that really depends on context. hope that helps! 😉

I can help you with English

The first one it's correct, useful and easy to pronounce ... Even the second it's correct but so heavy

You can never tell