Henry George Liddell, Robert Scott, A Greek-English Lexicon

A.“ἀλλήλοιϊν” Il.10.65, fem. “-αιν” X.Mem.2.3.18 codd.: dat. ἀλλήλοις, αις, οις, dual ἀλλήλοιν: acc. ἀλλήλους, ας, α, dual ἀλλήλω (fem.) X.Mem. 2.3.18, cf. LXX Ge.15.10, al.: the dual is rare in Prose : sg., “κεράμὡ ἁρμόττοντι πρὸς ἄλληλον” IG2.1054.59 : (redupl. from ἄλλος) :—of one another, to one another, one another; hence, mutually, reciprocally, used of all three persons, Il.4.62, Od.1.209, etc.: freq with Preps., ἐν ἀλλήλοισι among one another, Pi.P.4.223,etc.; “τούτω..ἐν ἀλλήλαισι” A.Pers.188; πρὸς ἀλλήλους, εἰς ἄλληλα, Id.Pr.491,1086 ; ἐπί, πρὸς ἀλλήλοις, Od.22.389, A.Pers.506, Ag.654; “ἐξἀλλήλων” X.Mem. 4.4.23 ; “κύκλὡ καὶ ἐξ ἀλλήλων δείκνυσθαι” Arist.APr.57b18 ; παρ᾽ ἀλλήλους, -α, Pl.Grg.472c, Phdr.264b ; ἡ δι᾽ ἀλλήλων δεῖξις reciprocal proof, Arist.APr.59a32,cf.D.L.9.89, etc.; “μετ᾽ ἀλλήλων” Arist.Pr. 953b32 ; “πρὸς αὑτὰ καὶ πρὸς ἄλληλα” Pl.“γργ.” 451c; “ὑπ᾽ ἀλλήλων” A.Th. 821 (Wrongly interpreted by Gramm. as ῀ἑαυτούς, -ῶν, Il.12.105, Th.2.70, E.Fr.1124.)