class="bi x1 y1 w2 h1"
class="bi x1 y2 w2 h2"
class="bi x1 y3 w2 h3"
class="bi x1 y4 w2 h4"
class="bi x1 y5 w2 h5"
class="bi x1 y6 w2 h6"
class="bi x1 y7 w2 h7"