Exodus 26:19, 21, 25
Exodus 26:19 And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons. 10 I MC VC
Exodus 26:21 And their forty sockets of silver; two sockets under one board, and two sockets under another board. 10 I MC VC
Exodus 26:25 And they shall be eight boards, and their sockets of silver, sixteen sockets; two sockets under one board, and two sockets under another board. 10 I MC VC