C111123313331323113313331333133313331122112312111133133313223331312321   >>    C11112331333132311331333133313331333112211231211113313331322333131232   <<    C111123313331323113313331333133313331122112312111133133313223331312323   >>      C111123313331323113313331333133313331122112312111133133313223331312322   >>