Quenya 

yunquë

cardinal. twelve

yunquë ("q") cardinal "twelve" (VT47:41, VT48:4, 6, 9; VT49:57; also compare the stem yunuk(w)-_ cited in VT42:24, 31). This word appears already in an early source (PE14:82)_. Some sources point to #rasta, q.v., as another word for "twelve". However, available post-LotR sources indicate that Tolkien intended yunquë as the regular Quenya word for "twelve".