For example, if you have this sentence:

> 急がないとならない

You can just say:

> 急がないと

But what if the sentence is...?

> 急がないとならないからあとで話そうね

Can you omit ならない there? It would turn into:

> 急がないとからあとで話そうね

It doesn't sound right to me but I want to be 100% sure it can't be omitted.
It also applies to other forms with the same meaning. For example, if you have
急がなければならない, can you shorten it to 急がなきゃ even if it's not the end of the
sentence? Or 急がなくてはならない to 急がなくちゃ, under the same circumstances?
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2021-01-11T19:07:42.320
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2021-01-11T19:07:42.320
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question
grammar abbreviations
Under what circumstances can you abbreviate forms like ないとならない?