class="bi x0 y0 w0 h1"
class="bi x1 y1 w1 h2"
class="bi x2 y2 w3 h3"

class="bi x3 y3 w4 h4"
class="bi x4 y4 w5 h5"
class="bi x0 y5 w6 h6"
class="bi x4 y6 w7 h0"
class="bi x2 y7 w8 h3"
class="bi x5 y6 w9 h7"