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NewStep=let col=Table.ColumnNames(Before) in Table.Combine(Table.Group(Before,List.FirstN(col,6),{"n",each #table(List.FirstN(col,6)&List.TransformMany({1..Table.RowCount(_)},each List.Skip(col,6),(x,y)=>y&Text.From(x)),{List.Combine(Table.ToRows(_))})})[n])