Mark 9:22

εἴ τι δύνῃ, if Thou canst do anything (A. and R. Vv.), or better, if anyhow Thou canst help. The father speaks under the impression that the case, as he has just described it, is one of peculiar difficulty; therefore while the leper said “if Thou wilt,” he says “if Thou canst ”. With reference to the form δύνῃ, Phryn. says that it is right after ἐὰν, but that at the beginning of a sentence δύνασαι must be used (p. 359).