Mk 14:23b ... and drank out of it everyone.

The fourth phrase has these 5 words ... kai epion eks autou pantes (and drank out of it everyone).

The 5 words are bottom up. The text doesn't say anything about the contents of the cup. It could be water, wine mixed with water, wine, or whatever metaphorical thing Jesus says it is in the next verse. In Mark's gospel, Judas never leaves to betray Jesus. The temple priests and their men already know where he will be. The word "pantes" (everyone) includes Judas. The diagram needs him so that the disciples can split into two groups of six so that their tongues are tangent to the word "everyone," the sides of the cup, and it's contents.