2 syllables:
darken, harken, harkin, hearken, parkin

2 syllables:
fortune, surgeon, bourgeon, sturgeon, georgian, urchin, margin, burgeon, airgun, bargain, barton, bergen, birchen, birken, bourbon, burden, burton, carbon, carden, carton, certain, cordon, curtain, darden, durban, garden, gergen, gordon, gorgon, harden, hearten, horton, jargon, jordan, marten, martin, morgan, morgen, morton, norton, organ, orpin, pardon, riordan, sharpen, shorten, spartan, tarpan, tarpon, tartan, terpene, turban, urban, verdun, warden, zircon

3 syllables:
gross margin, sea urchin, misfortune, flight surgeon, brain surgeon, tree surgeon, bank martin, beech marten, bombardon, cell organ, churchwarden, disburden, dishearten, drop curtain, end organ, face-harden, foreshorten, for certain, free pardon, game warden, grind organ, hand organ, herb garden, hop garden, house martin, house organ, incertain, mouth organ, pine marten, pipe organ, plant organ, reed organ, rock garden, roof garden, rose garden, saint martin, sand martin, sense organ, sex organ, speech organ, steam organ, stone marten, street organ, suburban, tea garden, tree martin, truck garden, unburden, uncertain

4 syllables:
dental surgeon, profit margin, plastic surgeon, bamboo curtain, barrel organ, beast of burden, chernomyrdin, chinook jargon, closing curtain, daniel morgan, fire warden, flower garden, fluorocarbon, genus tarpon, hammond organ, henry morgan, hydrocarbon, indoor garden, in the bargain, iron curtain, j p morgan, kitchen garden, lycoperdon, market garden, onopordon, overburden, purple martin, safety curtain, shower curtain, sunken garden, travel bargain, vital organ, white man's burden

5 syllables:
gross profit margin, soldier of fortune, battle of verdun, electric organ, external organ, genital organ, internal organ, into the bargain, john pierpont morgan, oregon jargon, ruptiliocarpon, theater curtain, theatre curtain, thomas hunt morgan, vegetable garden, victory garden

6 syllables:
veterinary surgeon, activated carbon, american marten, american organ, botanical garden, capital of jordan, electronic organ, excretory organ, lateral line organ, olfactory organ, reproductive organ, urinary organ, zoological garden

7 syllables:
respiratory organ

8 syllables:
hashemite kingdom of jordan

10 syllables:
male internal reproductive organ

11 syllables:
female internal reproductive organ