按要求写出以下结构的词语：
ABB: _________________ _________________ __________________ _________________
ABAB: _________________ _________________ __________________ _________________
ABCC: _________________ _________________ __________________ _________________
AABC: _________________ _________________ __________________ _________________
AABB: _________________ _________________ __________________ _________________
ABAC: _________________ _________________ __________________ _________________
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