C1111121111331311211331333133313331333133313231333133313331333131121133223231   >>    C111112111133131121133133313331333133313331323133313331333133313112113322323   <<    C1111121111331311211331333133313331333133313231333133313331333131121133223233   >>      C1111121111331311211331333133313331333133313231333133313331333131121133223232   >>