640

	Align	"center" colspan=2 <small>'''Years:'''</small><br> 636 637 638 639 - 640 - 641 642 643 644
	Align	"center" colspan=2 <small>''' 620s 630s - ''' 640s ''' - 650s 660s 670s
	Align	"center" <small>''' - ''' 7th Century ''' - 8th Century

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