All is in this same file : language\en-GB\en-GB.com_sppagebuilder.ini
Just take BIG LETTERS from this:
COM_SPPAGEBUILDER_SECOND="Second"
COM_SPPAGEBUILDER_SECONDS="Seconds"
COM_SPPAGEBUILDER_MINUTE="Minute"
COM_SPPAGEBUILDER_MINUTES="Minutes"
COM_SPPAGEBUILDER_HOUR="Hour"
COM_SPPAGEBUILDER_HOURS="Hours"
COM_SPPAGEBUILDER_DAY="Day"
COM_SPPAGEBUILDER_DAYS="Days"
COM_SPPAGEBUILDER_MONTHS="Months"
COM_SPPAGEBUILDER_MONTH="Month"
COM_SPPAGEBUILDER_YEAR="Year"
COM_SPPAGEBUILDER_YEARS="Years"
COM_SPPAGEBUILDER_AGO="ago"