class="bi x0 y0 w1 h1"
class="bi x0 y1 w2 h2"
class="bi x0 y2 w2 h3"
class="bi x1 y3 w3 h4"
class="bi x2 y4 w4 h5"
class="bi x0 y5 w5 h6"
class="bi x2 y3 w4 h4"
class="bi x2 y4 w6 h5"
class="bi x2 y4 w6 h7"
class="bi x3 y6 w7 h8"