Adverb tris (three times) in the Gospels-Acts

(Translation from NRSV)

Matthew

26: 34Jesus said to him, "Truly I tell you, this very night, before the cock crows, you will deny me three times (tris)."
26: 75Then Peter remembered what Jesus had said: "Before the cock crows, you will deny me three times (tris)." And he went out and wept bitterly.

Mark

14: 30Jesus said to him, "Truly I tell you, this day, this very night, before the cock crows twice, you will deny me three times (tris)."
14: 72At that moment the cock crowed for the second time. Then Peter remembered that Jesus had said to him, "Before the cock crows twice, you will deny me three times (tris)." And he broke down and wept.

Luke

22: 34Jesus said, "I tell you, Peter, the cock will not crow this day, until you have denied three times (tris) that you know me."
22: 61The Lord turned and looked at Peter. Then Peter remembered the word of the Lord, how he had said to him, "Before the cock crows today, you will deny me three times (tris)."

John

13: 38Jesus answered, "Will you lay down your life for me? Very truly, I tell you, before the cock crows, you will have denied me three times (tris).

Acts

10: 16This happened three times (tris), and the thing was suddenly taken up to heaven.
11: 10This happened three times (tris); then everything was pulled up again to heaven.