PastSim S+V²-ed (did)

PastCon S+was/were+V-ing

PastPer S+Had+V³-ed

PasPerCon S+had+been+V-ing

PresSim S+V^w3++(e)s do,does

PresCon S+to be+V-ing

PresPer S+have/Has+V³-ed

PerC S+have/Has+been+V-ing

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