REDUNDANT VERB

A verb, such as bereaved, bereft; blended, blent; blessed, blest; burned, burnt; clothed, clad; dreamed, dreamt; dropped, dropt; dwelled, dwelt; kneeled, knelt; learned, learnt; lighted, lit; leaped, leapt; pleaded, pled; showed, shown; smelled, smelt; spelled, spelt; spilled, spilt; spoiled, spoilt; shined, shone; tapped, tapt, among others, that has two forms for its past tense.