Past Perfect Tense—Passive Voice
(Substitute been seen for been in the past perfect subjunctive of to be.)
Future Tense—Active Voice
Simple
(Substitute see for be in the future subjunctive of to be.)
Progressive
(Substitute be seeing for be in the future subjunctive of to be.)
Future Tense—Passive Voice
(Substitute be seen for be in the future subjunctive of to be.)