retacking

retracking

sacking

sackings

safecracking

shacking

shellacking

sidetracking

skyjacking

slacking

smacking

snacking

stacking

switchbacking

tacking

tarmacking

thacking

thumbtacking

thwacking

ticktacking

tictacking

tracking

trackings

unpacking

unstacking

untacking

untracking

whacking

whackings

wisecracking

wracking

yacking