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| Base form | Past simple | Past participle | 3rd person  singular | Present participle   Gerund | 
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 | Unbear | Unbore | Unborn/Unborne | Unbears | Unbearing |  | Unbend | Unbent | Unbent | Unbends | Unbending |  | Unbind | Unbound | Unbound | Unbinds | Unbinding |  | Unbuild | Unbuilt | Unbuilt | Unbuilds | Unbuilding |  | Unclothe | Unclad/Unclothed | Unclad/Unclothed | Unclothes | Unclothing |  | Underbid | Underbid | Underbid/Underbidden | Underbids | Underbidding |  | Underbuy | Underbought | Underbought | Underbuys | Underbuying |  | Undercut | Undercut | Undercut | Undercuts | Undercutting |  | Underdo | Underdid | Underdone | Underdoes | Underdoing |  | Underfeed | Underfed | Underfed | Underfeeds | Underfeeding |  | Undergird | Undergirt/Undergirded | Undergirt/Undergirded | Undergirds | Undergirding |  | Undergo | Underwent | Undergone | Undergoes | Undergoing |  | Underlay | Underlaid | Underlaid | Underlays | Underlaying |  | Underlet | Underlet | Underlet | Underlets | Underletting |  | Underlie | Underlay | Underlain | Underlies | Underlying |  | Underpay | Underpaid | Underpaid | Underpays | Underpaying |  | Underrun | Underran | Underrun | Underruns | Underrunning |  | Undersell | Undersold | Undersold | Undersells | Underselling |  | Undershoot | Undershot | Undershot | Undershoots | Undershooting |  | Underspend | Underspent | Underspent | Underspends | Underspending |  | Understand | Understood | Understood | Understands | Understanding |  | Undertake | Undertook | Undertaken | Undertakes | Undertaking |  | Underthrust | Underthrust | Underthrust | Underthrusts | Underthrusting |  | Underwrite | Underwrote | Underwritten | Underwrites | Underwriting |  | Undo | Undid | Undone | Undoes | Undoing |  | Undraw | Undrew | Undrawn | Undraws | Undrawing |  | Undraw | Undrew | Undrawn | Undraws | Undrawing |  | Unfreeze | Unfroze | Unfrozen | Unfreezes | Unfreezing |  | Unhang | Unhung | Unhung | Unhangs | Unhanging |  | Unhide | Unhid | Unhidden | Unhides | Unhiding |  | Unhold | Unheld | Unheld | Unholds | Unholding |  | Unknit | Unknit/Unknitted | Unknit/Unknitted | Unknits | Unknitting |  | Unlade | Unladed | Unladen/Unladed | Unlades | Unlading |  | Unlay | Unlaid | Unlaid | Unlays | Unlaying |  | Unlearn | Unlearnt/Unlearned | Unlearnt/Unlearned | Unlearns | Unlearning |  | Unmake | Unmade | Unmade | Unmakes | Unmaking |  | Unreeve | Unrove/Unreeved | Unrove/Unreeved | Unreeves | Unreeving |  | Unsay | Unsaid | Unsaid | Unsays | Unsaying |  | Unsell | Unsold | Unsold | Unsells | Unselling |  | Unsew | Unsewed | Unsewn/Unsewed | Unsews | Unsewing |  | Unsling | Unslung | Unslung | Unslings | Unslinging |  | Unspeak | Unspoke | Unspoken | Unspeaks | Unspeaking |  | Unspin | Unspun | Unspun | Unspins | Unspinning |  | Unstick | Unstuck | Unstuck | Unsticks | Unsticking |  | Unstring | Unstrung | Unstrung | Unstrings | Unstringing |  | Unswear | Unswore | Unsworn | Unswears | Unswearing |  | Unteach | Untaught | Untaught | Unteaches | Unteaching |  | Unthink | Unthought | Unthought | Unthinks | Unthinking |  | Untread | Untrod | Untrodden | Untreads | Untreading |  | Unweave | Unwove | Unwoven | Unweaves | Unweaving |  | Unwind | Unwound | Unwound | Unwinds | Unwinding |  | Unwrite | Unwrote | Unwritten | Unwrites | Unwriting |  | Upbuild | Upbuilt | Upbuilt | Upbuilds | Upbuilding |  | Uphold | Upheld | Upheld | Upholds | Upholding |  | Uppercut | Uppercut | Uppercut | Uppercuts | Uppercutting |  | Uprise | Uprose | Uprisen | Uprises | Uprising |  | Upset | Upset | Upset | Upsets | Upsetting |  | Upspring | Upsprang | Upsprung | Upsprings | Upspringing |  | Upsweep | Upswept | Upswept | Upsweeps | Upsweeping |  | Uptear | Uptore | Uptorn | Uptears | Uptearing |  
  
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