 Regardless , K 'inich Yat Ahk II took up the throne on May 31 , <unk> AD ( 9 @.@ 17 @.@ 10 @.@ 9 @.@ 4 1 K 'an 7 <unk> 'in ) , almost a year following the end of Ha ' K 'in Xook 's reign . Despite this lengthy gap , there appears to be no evidence of anyone ruling Piedras Negras between the two kings . 
