G:Back To The Future (U)

C:Infinite Lives|0393:09|Rune|
C:Infinite Time|04A9:FF|Rune|
C:Clock Modifier (Ten's Digit)|04B4:XX|Rune|'38' represents '08', '39' represents '09'. Therefore, to have '99', you need both lines set to '39'.
C:Clock Modifier (One's Digit)|04B5:XX|Rune|'38' represents '08', '39' represents '09'. Therefore, to have '99', you need both lines set to '39'.