How does Strings comparaison work in Haskell? [duplicate]

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• How are strings compared in haskell? 2 answers

I can't understand how Haskell is comparing between two Strings (of different length).

For example,

"abc" <= "ab"

is returning False

But

"abc" <= "ac"

is returning True

Isn't Haskell compare character by character for each Strings?

For the first example, I thought "a"<="a", "b"<="b", "c"<=""

For the second example, "a"<="a", "b"<="c", "c"<=""