C111123313331323113313331333133313331122112312111133131121323331   >>    C11112331333132311331333133313331333112211231211113313112132333   <<    C111123313331323113313331333133313331122112312111133131121323333   >>      C111123313331323113313331333133313331122112312111133131121323332   >>