我一字一字地学习汉语 OR 我一个字一个字地学习汉语?

Question

Which is the correct use of this grammar pattern? 我一字一字地学习汉语。 我一个字一个字地学习汉语。 The first one feels correct to me. The pattern is: 一{MW,N}一{MW,N} + 地 + V

Answer 1

The the second one sounds better. 个 is a measure word, supposed to be"一个字"。

Answer 2

Both are correct in grammar. 一字一字 is more formal compared to 一个字一个字。