Here is a list of verbs that start with PRO.
probe, probed, probing, proceed, proceeded
proceeding, proceeds, process, processed, processing
proclaim, proclaimed, proclaiming, proclaims, procrastinate
procure, procured, prod, prodded, prodding
produce, produced, produces, producing, profess
professed, professes, professing, proffered, profit
profited, program, programed, programing, programmed
programming, progress, progressed, progresses, progressing
prohibit, prohibited, prohibiting, prohibits, project
projected, projecting, projects, proliferated, prolong
prolonged, prolonging, prolongs, promise, promised
promises, promising, promote, promoted, promotes
promoting, prompt, prompted, prompts, promulgated
promulgating, pronounce, pronounced, pronouncing, prop
propagate, propagated, propel, propelled, propelling
prophesied, prophesies, propitiate, propose, proposed
proposes, proposing, propositioned, propped, propping
prorate, proscribe, proscribed, prosecute, prosecuted
prosecuting, proselytizing, prosper, prospered, prospering
prospers, prossed, prostitute, protect, protected
protecting, protects, protest, protested, protesting
protests, protracted, protrude, protruded, protruding
provdied, prove, proved, proven, proves
provide, provided, provides, providing, proving
provisioned, provoke, provoked, provokes, prowl
prowled, prowling
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