Marshall Hall Difference Set Construction Class 03: --------- 11111111111111111111111111111111 1-1111-1-1---1--111-----11--1-11 11-1111-1-1---1--111-----11--1-1 111-1111-1-1---1--111-----11--1- 1-11-1111-1-1---1--111-----11--1 11-11-1111-1-1---1--111-----11-- 1-1-11-1111-1-1---1--111-----11- 1--1-11-1111-1-1---1--111-----11 11--1-11-1111-1-1---1--111-----1 111--1-11-1111-1-1---1--111----- 1-11--1-11-1111-1-1---1--111---- 1--11--1-11-1111-1-1---1--111--- 1---11--1-11-1111-1-1---1--111-- 1----11--1-11-1111-1-1---1--111- 1-----11--1-11-1111-1-1---1--111 11-----11--1-11-1111-1-1---1--11 111-----11--1-11-1111-1-1---1--1 1111-----11--1-11-1111-1-1---1-- 1-111-----11--1-11-1111-1-1---1- 1--111-----11--1-11-1111-1-1---1 11--111-----11--1-11-1111-1-1--- 1-1--111-----11--1-11-1111-1-1-- 1--1--111-----11--1-11-1111-1-1- 1---1--111-----11--1-11-1111-1-1 11---1--111-----11--1-11-1111-1- 1-1---1--111-----11--1-11-1111-1 11-1---1--111-----11--1-11-1111- 1-1-1---1--111-----11--1-11-1111 11-1-1---1--111-----11--1-11-111 111-1-1---1--111-----11--1-11-11 1111-1-1---1--111-----11--1-11-1 11111-1-1---1--111-----11--1-11- DS: 2 3 4 5 7 9 14 16 17 18 25 28 30 31 SNF: