C111123313121111121111331333133313113313232123313331311331313331323221321   >>    C11112331312111112111133133313331311331323212331333131133131333132322132   <<    C111123313121111121111331333133313113313232123313331311331313331323221323   >>      C111123313121111121111331333133313113313232123313331311331313331323221322   >>