cIn forms of Hebrew older than Modern Hebrew, כ״ף, בי״ת and פ״א can only be read "b", "k" and "p", respectively, at the beginning of a word, while they will have the sole value of "v", "kh" and "f" in a "sofit" (final) position, with few exceptions. In medial positions, both pronunciations are possible. In Modern Hebrew this restriction is not absolute, e.g. פִיזִיקַאי and never (= "physicist"), סְנוֹבּ and never (= "snob"). A "dagesh" may be inserted to unambiguously denote the plosive variant: בּ = , כּ = , פּ =; similarly (though today very rare in Hebrew and common only in Yiddish) a rafé placed above the letter unambiguously denotes the fricative variant: בֿ = , כֿ = and פֿ = . In Modern Hebrew orthography, the sound at the end of a word is denoted by the regular form "פ", as opposed to the final form "ף", which always denotes (see table of transliterations and transcriptions, comment).