'Tenons' in the Bible

Each plank must be connected together with two tenons. Do the same for all the planks of the tabernacle.

and make 40 silver bases under the 20 planks, two bases under the first plank for its two tenons, and two bases under the next plank for its two tenons;

There were two tenons connected to each other for each plank. He did the same for all the planks of the tabernacle.

and he made 40 silver bases to put under the 20 planks, two bases under the first plank for its two tenons, and two bases under each of the following planks for their two tenons;