3 letters:
bom, com, dom, hom, mam, mom, nom, pai, pam, par, pas, paz, pod, pog, pom, pon, pop, pos, pot, qom, rom, som, tom, yom

4 letters:
balm, bohm, bomb, calm, dohm, halm, lomb, malm, paap, paar, pahl, pall, parr, pimm, poch, pock, pomp, popp, posh, poth, pott, prom, pymm, romm, saam, salm, thom, zalm, palm

5 letters:
homme, paape, palms, poche, podge, poppe

6 letters:
paasch, palmer, pommer