You are given a perpetuity with annual payments as follows... Payments of 1 at the end of the 1t year and every 3 years thereafter Payments of 2 at the end of the 2nd year and every 3 years thereafter Payments of 3 at the end of the 3nd year and every 3 years thereafter 2. The interest rate is 5% convertible semiannually. Calculate its present value