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| Base form | Past simple | Past participle | 3rd person singular | Present participle Gerund |
|---|
| 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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