Am Tue, Feb 01, 2022 at 11:29:50PM +0000 schrieb Shaozhong SHI: > How about knock unique words into discrete joint up strings? Then check > whether there is any repeated words? Does it work when you try ? Karsten -- GPG 40BE 5B0E C98E 1713 AFA6 5BC0 3BEA AC80 7D4F C89B