🐦🐦🕊️🐧🕊️ wrapper for `1+(++0)`
  🐧🐦🐧🕊️🐧🕊️ wrapper for `add ++(++0)`
    🪽🐧 add
    🦢🐧 inc
      🦢🐧 inc
        🐥🐦 zero
  🦢🐧 inc
    🐥🐦 zero