C111123313121111121111331333133313113313232123313331323221312331   >>    C11112331312111112111133133313331311331323212331333132322131233   <<    C111123313121111121111331333133313113313232123313331323221312333   >>      C111123313121111121111331333133313113313232123313331323221312332   >>