Symbols

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Across
  1. 3. the first and last letters of the Greek alphabet
  2. 4. A thing that represents or stands for something else
  3. 6. The Emperor Costantine saw it in a dream
  4. 7. ICHTUS
Down
  1. 1. two or more letters to form one symbol
  2. 2. Animal related to Passover
  3. 5. Symbol of the Holy Spirit
  4. 6. Jesus was crucified on it