All of these are for third person singular.

ACTIVE INDICATIVE	Past	Present	Future
Simple	it was	it's	it'll be
Progressive	it was being	it's being	it'll be being
Perfect	it'd been	it's been	it'll've been
Progres. Perfect	it'd been being	it's been being	it'll've been being
Habitual	it used to be	-	-

ACTIVE CONDITIONAL	Past	Present	Future
Simple	-	it'd be	-
Progressive	-	it'd be being	-
Perfect	-	it'd've been	-
Progres. Perfect	-	-	-
Habitual	-	-	-

ACTIVE SUBJUNCTIVE	Past	Present	Future
Simple	it were	it be	-
Progressive	it were being	it be being	-
Perfect	-	-	-
Progres. Perfect	-	-	-
Habitual	-	-	-

ACTIVE INFINITIVE	Past	Present	Future
Simple	-	to be	-
Progressive	-	to be being	-
Perfect	-	to've been	-
Progres. Perfect	-	to've been being	-
Habitual	to used to be	-	-

Imperative for 2nd person: "be", for 1st plural: "let's be".
Present Participle: "Being", past: "been".