[*] 605. Perfects and Perfect Participles of two syllables have the first syllable long: as, iūvī , iūtum ( iŭvō ), vīdī , vīsum ( vĭdeō ); fūgī ( fŭgiō ); vēnī ( vĕniō ). Exceptions.—bĭbī, dĕdī , fĭdī, scĭdī, stĕtī , stĭtī, tŭlī; cĭtum, dătum,ĭtum, lĭtum, quĭtum, rătum , rŭtum , sătum , sĭtum, stătum . In some compounds of stō , stātum is found (long), as praestātum . [*] a. In reduplicated perfects the vowel of the reduplication is short; the vowel of the following syllable is, also, usually short: as, cĕcĭdī ( cădō ), dĭdĭcī ( discō ), pŭpŭgī ( pungō ), cŭcŭrrī ( currō ), tĕtĕndī ( tendō ), mŏmŏrdī ( mordeō ). But cĕcīdī from caedō , pepēdī from pēdō .
[*] 605. Perfects and Perfect Participles of two syllables have the first syllable long: as, iūvī , iūtum ( iŭvō ), vīdī , vīsum ( vĭdeō ); fūgī ( fŭgiō ); vēnī ( vĕniō ). Exceptions.—bĭbī, dĕdī , fĭdī, scĭdī, stĕtī , stĭtī, tŭlī; cĭtum, dătum,ĭtum, lĭtum, quĭtum, rătum , rŭtum , sătum , sĭtum, stătum . In some compounds of stō , stātum is found (long), as praestātum . [*] a. In reduplicated perfects the vowel of the reduplication is short; the vowel of the following syllable is, also, usually short: as, cĕcĭdī ( cădō ), dĭdĭcī ( discō ), pŭpŭgī ( pungō ), cŭcŭrrī ( currō ), tĕtĕndī ( tendō ), mŏmŏrdī ( mordeō ). But cĕcīdī from caedō , pepēdī from pēdō .