C111123313121111121111331333133313331333131233133313311211232321   >>    C11112331312111112111133133313331333133313123313331331121123232   <<    C111123313121111121111331333133313331333131233133313311211232323   >>      C111123313121111121111331333133313331333131233133313311211232322   >>