1 8 . ▁ ▁The ▁name ▁of ▁E f ▁in ▁the ▁Early ▁C yr ill ic ▁alphabet ▁is ▁ ▁( fr ̥ t ŭ ▁or ▁fr ĭ t ŭ ), ▁in ▁later ▁Church ▁S lav onic ▁and ▁Russian ▁form ▁it ▁became ▁ф ер т ъ ▁( fert ). ▁ ▁In ▁the ▁C yr ill ic ▁numer al ▁system , ▁E f ▁has ▁a ▁value ▁of ▁ 5 0 0 . ▁ ▁App earance ▁The ▁S lav ic ▁languages ▁have ▁almost ▁no ▁native ▁words ▁containing ▁. ▁This ▁sound ▁did ▁not ▁exist ▁in ▁Pro to - Ind o - Europe an ▁( PI E ). ▁It ▁arose ▁in ▁Greek ▁and ▁Latin ▁from ▁P IE ▁ ▁( which ▁yield ed ▁S lav ic ▁). ▁In ▁some ▁instances ▁in ▁Latin , ▁it ▁represented ▁historical ▁th - front ing ▁and ▁derived ▁from ▁Pro to - Ind o - Europe an ▁. ▁In ▁the ▁German ic ▁languages , ▁the ▁f ▁sound ▁arose ▁from ▁P IE ▁, ▁which ▁remained ▁un changed ▁in ▁S lav ic . ▁The ▁letter ▁ф ▁is ▁thus ▁almost ▁exclus ively ▁found ▁in ▁words ▁of ▁foreign ▁origin , ▁especially ▁Greek ▁( from ▁ φ ▁and ▁sometimes ▁from ▁ θ ), ▁Latin , ▁French , ▁German , ▁Dutch , ▁English , ▁and ▁Turk ic . ▁ ▁Example ▁borrow ings ▁in ▁Russian : ▁ ▁from ▁Greek : ▁ката стро фа , ▁" cat ast rop he " ▁( from ▁ φ ); ▁Ф ё дор , ▁" The odore " ▁( from ▁ θ ) ▁ ▁from ▁Latin :