class="bi x0 y0 w1 h1"
class="bi x1 y1 w2 h2"
class="bi x2 y2 w3 h3"
class="bi x3 y3 w4 h4"
class="bi x4 y4 w5 h2"
class="bi x5 y3 w6 h4"
class="bi x6 y5 w0 h5"
class="bi x1 y4 w2 h4"
class="bi x6 y5 w0 h6"
class="bi x5 y1 w7 h2"