1 syllable:
&burn, bearn, bern, berne, birne, bkorn, burn, burn-e, burne, byrne, cern, cerne, chern, cherne, churn, cleburne, dearn, dern, derne, dirne, durn, earn, erne, fearn, ferne, gerne, hearn, hearne, hern, herne, hirn, hurn, j-turn, journ, kearn, kern, kerne, kirn, learn, morne, quern, scern, shern, spurn, stearn, stearne, stern, sterne, stirn, sturn, terne, thurn, turn, turne, urn, vern, verne, yearn, yerne, zurn

2 syllables:
adjourn, ahearn, ahern, aherne, alpern, alterne, amburn, asperne, attorn, bradburn, brightburn, camburn, cisturn, clayburn, cockburn, cogburn, concern, concern', crewkerne, decern, deturn, discern, disturn, diurne, dornbirn, downturn, eastburn, edirne, etern, eterne, excern, extern, externe, fairburn, fishburn, flip-turn, footworn, freeburn, gehirn, glassburn, glenburn, half-turn, hardfern, heartburn, hebburn, iceburn, imgburn, interne, inturn, kinburn, lampern, lantirn, lavern, laverne, lean-burn, lisburn, luverne, marshburn, mashburn, mcgurn, mckern, milburn, minturn, misturn, mowburn, new-bern, newburn, nocturn, o'beirne, o'byrne, o'hearn, o'hern, obyrne, ohearn, ohern, osburn, outburn, pangburn, re-turn, reburn, redburn, redfern, rejourn, return, rootcern, sauterne, secern, self-bern, sideburn, springburn, still-burn, stjerne, sunburn, u-turn, unturn, unworn, upturn, washburn, washburne, winburn, windburn, wood-fern, woodburn, woodfern

3 syllables:
about-turn, altbayern, ampere-turn, arterburn, cisternerne, counterturn, erwidern, otterburn, overburn, overturn, overworn, readjourn, self-concern, sempiterne, slash-and-burn, taciturn, unconcern, underturn

4 syllables:
overconcern, sale-or-return

6 syllables:
mecklenburg-vorpommern

1 syllable:
shorn, torn, thorn, bairn, borne, warn, darn, worn, cairn, yarn, horn, porn, sworn, barn, mourn, morn, scorn, bourn, corn, born, bourne

2 syllables:
adorn, lowborn, reborn, tricorn, forlorn, unborn, stillborn, forewarn, firstborn, careworn, casern, cowbarn, relearn, timeworn, unlearn, unsworn, war-worn

3 syllables:
city-born, foreign-born