[CQ-Contest] Can a call be too short?

["John Geiger" <aa5jg@fidmail.com>]

I am helping with some research about ideal calls in terms of DXing and 
contesting, and was rereading some of the old posts about ideal letters in a 
callsign. I wonder if some combinations can be too short for CW?  Do the single 
character letters like E and T tend to get lost in pileups and require repeats 
a lot?  Would a suffix like EET or TET be problematic?  Or does it help that 
they are shorter to send?

73s John AA5JG
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