If you purchase a Carepaq, can actually extend the service beyond that? 3,4,and 5-Year 24x7 Carepaqs are available on purchase for the _whole_ chassis and part

If you purchase a Carepaq, can actually extend the service beyond that? 3,4,and 5-Year 24x7 Carepaqs are available on purchase for the _whole_ chassis and parts... but I wonder if I can keep purchasing 1-year carepaq extensions beyond the 6th year.