C1111233131211111211113313331333133313311211111333133313331333132313132232321   >>    C111123313121111121111331333133313331331121111133313331333133313231313223232   <<    C1111233131211111211113313331333133313311211111333133313331333132313132232323   >>      C1111233131211111211113313331333133313311211111333133313331333132313132232322   >>