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... nec tenerum Lycidan mirabere, quo calet iuventus ...

Note the "be" as sign of the future for the first and second conjugations; "be" is the actual suffix for the future, but by a phonetic rule of Latin, "e" is raised to "i" after a stressed syllable and before any consonant except "r"; hence it appears only after the 2nd pers. sing. pass. ending "ris" or "re." This same phonetic rule applies to the short "e" in the stem of third conjugation verbs, "duce" becoming "ducis" and "ducit" and so forth.