Exodus 26:19-21

CKJV_Strongs(i)
  19 H6213 And you shall make H705 forty H134 sockets H3701 of silver H6242 under the twenty H7175 boards; H8147 two H134 sockets H259 under one H7175 board H8147 for his two H3027 tenons, H8147 and two H134 sockets H259 under another H7175 board H8147 for his two H3027 tenons.
  20 H8145 And for the second H6763 side H4908 of the tabernacle H6828 on the north H6285 side H6242 there shall be twenty H7175 boards:
  21 H705 And their forty H134 sockets H3701 of silver; H8147 two H134 sockets H259 under one H7175 board, H8147 and two H134 sockets H259 under another H7175 board.