A root in the Qenya Lexicon of the 1910s given as ᴱ√LENE “long”, with the added explanation that it “developed in opp. directions of slow, tedious, trailing, etc. and - stretch, thin, etc.”. Tolkien originally put the word ᴱQ. lenka “slow, left” under this root, but seems to have transferred this word to ᴱ√LEKE, perhaps at the same time he elaborated on the meaning of ᴱ√LENE “long”. Its remaining derivatives include ᴱQ. lenwa “long and thin, straight, narrow” and ᴱQ. lenu- “stretch”.
There are a number of words in the Gnomish Lexicon that seem to be derived from this root, including G. len “wherewith, far, long, away” and G. lenwi “length, distance”, but these were rejected, and Tolkien replaced them with G. lenc “far, distant” derived from ᴱ√leŋe (which was followed by other similar Gnomish derivatives), possibly representing a conceptual shift in this root (GL/53). In any case, there are no clear signs of this root in Tolkien’s later writing, unless perhaps it remanifested as ᴹ√LEN “way, (?road)” from The Etymologies of the 1930s (EtyAC/LEN).
A root in the Qenya Lexicon of the 1910s glossed “collect” with derivatives like ᴱQ. lese- “come together, gather” and ᴱQ. lesta “gathering, assembly” (QL/53). It also had derivatives in the contemporaneous Gnomish Lexicon such as G. lest “gathering, assembly, concourse, moot” and G. lesta- “gather, assemble, meet” (GL/53). There are no clear indications of this root in Tolkien’s later writings, where Tolkien seems to have shifted to ᴹ√KHOTH “gather”, but it is possible that ᴹQ. lesta “measure” from Fíriel’s Song of the 1930s is connected to this early root.