Exodus 26:25

26:25 So there are to be eight frames and their silver bases, sixteen bases, two bases under the first frame, and two bases under the next frame.

Exodus 28:10

28:10 six ¹  of their names on one stone, and the six remaining names on the second stone, according to the order of their birth. ² 

Exodus 36:30

36:30 So there were eight frames and their silver bases, sixteen bases, two bases under each frame.

¹ tn This is in apposition to the direct object of the verb “engrave.” It further defines how the names were to be engraved – six on one and the other six on the other.

² tn Heb “according to their begettings” (the major word in the book of Genesis). What is meant is that the names would be listed in the order of their ages.