Horizontal segments: 1-13, 22-23, 29-35, 36-42, 43-56, 57-70, 71-77, 78-84, 85-97, 99-105, 106-112, 113-119, 120-126, 127-133, 134-140, 141-147, 148-153, 155-161, 162-167, 169-174, 176-181, 190-195