class="bi x0 y0 w0 h1"
class="bi x1 y1 w1 h2"
class="bi x1 y2 w1 h3"
class="bi x0 y3 w0 h4"
class="bi x0 y0 w0 h5"
class="bi x2 y4 w2 h0"
class="bi x2 y5 w2 h6"