C111123313331323113313331333133313331323131211113313113313332222121   >>    C11112331333132311331333133313331333132313121111331311331333222212   <<    C111123313331323113313331333133313331323131211113313113313332222123   >>      C111123313331323113313331333133313331323131211113313113313332222122   >>