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class Solution:
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    def reverseOnlyLetters(self, s: str) -> str:
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        st, sp = [], []
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        for i, ch in enumerate(s):
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            if ch.isalpha():
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                st.append(ch)
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            else:
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                sp.append([i, ch])
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        st = st[::-1]
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        for i in sp:
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            st.insert(i[0], i[1])
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        return "".join(st)