συγκατασκευάζω
From LSJ
κάμψαι διαύλου θάτερον κῶλον πάλιν → bend back along the second turn of the race, turning the bend and coming back for the second leg of the double run, run the homeward course, retrace one's steps
English (LSJ)
A help in establishing or organizing, τὴν ἀρχήν Th.1.93, cf. X.Lac.8.3; πάνθ' ὁπόσα τὸν ἀνθρώπινον βίον σ. Pl.Plt. 274d, cf. Isoc.3.6, etc.; [δημιουργοὶ] τὸν βίον ἡμῖν σ. τέχναις Pl.Lg. 920e; τὸ ἐπιτήδειον X.Vect.4.38; σ. τὸν ἐν Ἀμφίσσῃ πόλεμον join in promoting it, D.18.143; πάντα σ. τινί assist him in promoting, Id.3.17: abs., Id.17.15:—Med., BCH55.43 (Odessus, i B.C.):—Pass., Phld Lib.p.25 O.; -αζόμενος στοχασμός, of mutually confirmatory or cumulative evidence, Hermog Stat.3, cf. Arg.D.19.14, Gal.8.566.