Targum for Exodus 37:21

וְכַפְתֹּ֡ר תַּחַת֩ שְׁנֵ֨י הַקָּנִ֜ים מִמֶּ֗נָּה וְכַפְתֹּר֙ תַּ֣חַת שְׁנֵ֤י הַקָּנִים֙ מִמֶּ֔נָּה וְכַפְתֹּ֕ר תַּֽחַת־שְׁנֵ֥י הַקָּנִ֖ים מִמֶּ֑נָּה לְשֵׁ֙שֶׁת֙ הַקָּנִ֔ים הַיֹּצְאִ֖ים מִמֶּֽנָּה׃

and a knop under two branches of one piece with it, and a knop under two branches of one piece with it, and a knop under two branches of one piece with it, for the six branches going out of it.

Targum Jonathan on Exodus