C111123313331323113313331333133313331122112312111133133313331333132233131231   >>    C11112331333132311331333133313331333112211231211113313331333133313223313123   <<    C111123313331323113313331333133313331122112312111133133313331333132233131233   >>      C111123313331323113313331333133313331122112312111133133313331333132233131232   >>