class="bi x1 y1 w2 h2"
class="bi x2 y2 w3 h3"
class="bi x3 y1 w4 h2"
class="bi x1 y1 w5 h2"
class="bi x1 y2 w5 h3"
class="bi x3 y2 w3 h4"
class="bi x2 y1 w6 h2"
class="bi x3 y1 w4 h5"
class="bi x4 y1 w2 h2"