我有一个txt文件，其中包含超过一百万行的下一个内容（它是Match_n和“ cggggg”之间的标签）：
Sequence_1
Match_1 cggggg
Match_2 gggggc
Match_3 ggggcc
Match_4 cgggcc
Match_5 agggca
Match_6 agggta
Sequence_2
Match_1 tgggca
Match_2 aggggg
Match_3 gggggc
Match_4 ggggca
Sequence_3
Match_1 cggggt
Match_2 ggggtt
Match_3 tgggga
Match_4 ggggac
Match_5 cggggc
我需要以下格式：
Sequence_1 Match_1 cggggg
Sequence_1 Match_2 gggggc
Sequence_1 Match_3 ggggcc
Sequence_1 Match_4 cgggcc
Sequence_1 Match_5 agggca
Sequence_1 Match_6 agggta
Sequence_2 Match_1 tgggca
Sequence_2 Match_2 aggggg
Sequence_2 Match_3 gggggc
Sequence_2 Match_4 ggggca
Sequence_3 Match_1 cggggt
Sequence_3 Match_2 ggggtt
Sequence_3 Match_3 tgggga
Sequence_3 Match_4 ggggac
Sequence_3 Match_5 cggggc
更多信息：有10.000个“ Sequence_N”，每个都有可变数量的“ Match_n cggggc”
谢谢！！
awk -v OFS='\t' 'NF==1{seq=$0; next} {print seq, $0}' file
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