1. The 80% of high-value items that account for around 20% the total stock value

2. The 20% of high-value items that account for around 20% the total stock value

3. The 20% of high-value items that account for around 80% the total stock value

4. The 80% of high-value items that account for around 80% the total stock value

The 20% of high-value items that account for around 80% the total stock value