C111123313331323113313331333132313331311331312111133131122112312121   >>    C11112331333132311331333133313231333131133131211113313112211231212   <<    C111123313331323113313331333132313331311331312111133131122112312123   >>      C111123313331323113313331333132313331311331312111133131122112312122   >>