class="bi x0 y0 w1 h1"
class="bi x1 y1 w2 h2"
class="bi x2 y2 w1 h3"
class="bi x1 y3 w3 h4"
class="bi x0 y4 w4 h5"
class="bi x1 y5 w5 h6"
class="bi x1 y6 w2 h7"
class="bi x2 y7 w6 h8"
class="bi x2 y8 w4 h9"
class="bi x1 y9 w3 ha"