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