Leaves allowed article ship

Can you please tell me how many leaves are allowed and/or subject to extension in the following case?

Principal A) Period of Servise = complete 3 years ( 1095 days) and Leaves taken - 488 days.

Principal B) Period of Servise = 387 days and Leaves taken - 50 days.

Note : above both A and B served by a single Student. after Termination of Article ship from principal A, he Re-Registered with B.