------------------- INPUT FILE: JANE, DOE HT000000000 123 50 70 80 JOHN, DOE JR H0000000000 123 50 70 80 WILLIAM, DOE HT000000000 123 50 70 80 ------------------- EXPECTED OUTPUT FILE: HT000000000 123 50 70 80 H0000000000 123 50 70 80 HT000000000 123 50 70 80