class="bi x0 y0 w1 h1"
class="bi x1 y0 w2 h1"
class="bi x2 y1 w3 h2"
class="bi x3 y2 w4 h3"
class="bi x4 y3 w5 h4"
class="bi x5 y4 w6 h5"
class="bi x6 y0 w7 h1"
class="bi x5 y4 w6 h5"
class="bi x5 y4 w6 h5"
class="bi x3 y4 w4 h5"
class="bi x5 y4 w6 h5"