C111123313331323113313331333133313331122112312111111331323112113111   >>    C11112331333132311331333133313331333112211231211111133132311211311   <<    C111123313331323113313331333133313331122112312111111331323112113113   >>      C111123313331323113313331333133313331122112312111111331323112113112   >>