With adjectives and adverbs of similarity and dissimilarity the comparison is often condensed (brachylogy) : ὁμοίᾱν ταῖς δούλαις εἶχε τὴν ἐσθῆτα she had a dress on like (that of) her servants C. 5.1.4 (the possessor for the thing possessed, = τῇ ἐσθῆτι τῶν δουλῶν), Ὀρφεῖ γλῶσσα ἡ ἐναντίᾱ a tongue unlike (that of) Orpheus Ag. 1629.
a. After adjectives and adverbs of likeness we also find καί, ὅσπερ (ὥσπερ). Thus, παθεῖν ταὐτὸν ὅπερ πολλάκις πρότερον πεπόνθατε
to suffer the same as you have often suffered before 1.8, οὐχ ὁμοίως πεποιήκᾱσι καὶ Ὅμηρος they have not composed their poetry as Homer did P. Ion 531 d.