the members of the age lines of seventeen form a diamond, which they've used as a representative symbol
in 95 line you have 3 (seungcheol, jeonghan, joshua)
in 96 line you have 4 (jun, hoshi, wonwoo, woozi)
in 97 line you have 3 (dk, mingyu, the8)
in 98 line you have 2 (seungkwan, vernon)
in 99...