3 letters:
gaf, lab, lac, lad, lag, lak, lal, lam, lan, lap, raf

4 letters:
calf, gaff, haff, half, lach, lack, ladd, lahm, lahn, lamb, lamm, lang, lann, lash, lass, lath, lauf, leaf, leff, leif, lief, life, liff, loaf, luff, naff, paff, raff, taff, laff

5 letters:
chaff, gaffe, labbe, lache, lambe, lamme, lange, lappe, lasch, latch, liffe, pfaff, shaff, taffe, yaffe

6 letters:
laffer, laffey, latsch, laughs, schaff

7 letters:
laughed