is\t\twas\t\tgewees\t\tsynde ,\thet\t\thad\t\tgehad ,\tBUT:\tword\t\tgeword
PRS.be\t-\tPST.be\t-\tPTCP.be\t-\tbeing\t-\tPRS.have\t-\tPST.have\t-\tPTCP.have\tPRS.become\t-\tPTCP.become
is/are/am/being - was/were - been - being, have - had - had, become - became