"grid vl"><span class="fb">A<br>B</span><span class="fb">M<br>N</span><span class="fb s">X<br>Z</span></div>
<div class="grid vl"><span class="fb pbs">A<br>B</span><span class="fb">M<br>N</span><span class="fb s">X<br>Z</span></div>
<div class="grid vr"><span class="fb">A<br>B</span><span class="fb">M<br>N</span><span class="fb s">X<br>Z</span></div>
<div class="grid vr"><span class="fb pbe">A<br>B</span><span class="fb">M<br>N</span><span class="fb s">X<br>Z</span></div>

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<div class="grid