. | . ( | ) \ | / _ | _ - | - ` | ' ---+--- ---+--- ---+--- ---+--- ---+--- ---+--- | ( | ) / | \ | | , | | | | + | + v | v ---+--- ---+--- ---+--- | | | + | + ^ | ^ empty place for other | "flippable" characters: ---+--- |
Source: https://ascii.co.uk/art/puzzle