Part 29 (1/2)

_Progressive_

_to have been seeing_

PERFECT TENSE--PassIVE VOICE

_Simple_

_to have been seen_

PARTICIPLES

PRESENT TENSE--ACTIVE VOICE

_seeing_

PRESENT TENSE--PassIVE VOICE

_being seen_

PAST TENSE--PassIVE VOICE[]

_seen_

[Footnote : There is no past participle in the active voice]

PERFECT TENSE--ACTIVE VOICE

_Si been seeing_

PERFECT TENSE--PassIVE VOICE

_having been seen_

GERUNDS