111-1-----1----1------11-11-11---111111-1111-1-1-11---11-1-1-11---1--11--1--11-1-11----11--1-1--1
1--11-1--11-111--11-1111----------11-1-1-1---11----11---1-1-1-11----------1111-11--111-11--1-11--
11-----1---1----11-1111---1-1111-1---1---1--1111--1111--1---1---1-1111-1---1111-11----1---1-----1
1----1111----1--1---11-11-1--11-1-1-1-11-1-1----11----1-1-11-1-1-1-11--1-11-11---1--1----1111----