class="bi x0 y0 w0 h1"

class="bi x0 y0 w0 h2"
class="bi x0 y0 w0 h3"
class="bi x0 y0 w0 h4"

class="bi x0 y0 w1 h5"

class="bi x0 y0 w1 h6"

class="bi x0 y0 w1 h7"

class="bi x0 y0 w0 h4"
class="bi x0 y0 w0 h8"
class="bi x0 y0 w0 h5"
class="bi x0 y0 w0 h9"
class="bi x0 y0 w0 h6"

class="bi x0 y0 w0 h8"

class="bi x0 y0 w0 ha"
class="bi x0 y0 w0 h6"
class="bi x0 y0 w1 hb"
class="bi x0 y0 w0 h8"