1. Perfect, Pluperfect, and Future Perfect Indicative,
2. Perfect and Pluperfect Subjunctive,
3. Perfect Infinitive,
- (Active.)
III. Participial Stem, from which are formed--
1. Perfect Participle,
2. Perfect, Pluperfect, and Future Perfect Indicative,
3. Perfect and Pluperfect Subjunctive,
4. Perfect Infinitive,
- (Passive.)

Apparently from the same stem, though really of different origin, are the
Supine, the Future Active Participle, the Future Infinitive Active and
Passive.

THE FOUR CONJUGATIONS.

98. There are in Latin four regular Conjugations, distinguished from each
other by the vowel of the termination of the Present Infinitive Active, as
follows:--

INFINITIVE DISTINGUISHING
CONJUGATION. TERMINATION. VOWEL.
I. -āre ā
II. -ēre ē
III. -ĕre ĕ
IV. -Ä«re Ä«

99. PRINCIPAL PARTS. The Present Indicative, Present Infinitive, Perfect
Indicative, and the Perfect Participle[28] constitute the Principal Parts