reckon-reckoning-reckoned-reckoned
sound-sounding-sounded-sounded
taste-tasting-tasted-tasted
climb-climbing-climbed-climbed
name-naming-named-named
panic-panicking-panicked-panicked
discover-discovering-discovered-discovered
cost-costing-cost-cost
prefer-preferring-preferred-preferred
explore-exploring-explored-explored
reckoning reckoned reckoned
sounding sounded sounded
tasting tasted tasted
climbing climbed climbed
naming named named
panicking panicked panicked
discovering discovered discovered
costing cost cost
preferring preferred preferred
exploring explored explored