 Monument 106 is the earliest securely dated monument at the site , dating to AD 593 . It depicts Ruler 1 . 
 Monument 106 <a href='drop_aux' title='1'><mark>is</mark></a>the earliest securely dated monument at the site , dating to AD 593 . It <a href='uninflect' title='2'><mark>depicts</mark></a> Ruler 1 . 
Monument 106 da earliest securely dated monument at the site , dating to AD 593 . It depict Ruler 1 .