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This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

A hand drawn grid features eight columns and twenty rows. Each cell contains a group of two, three, or four lowercase letters. The first letter in each group is written in red ink to guide the eye. The following letters are in black ink. This grid serves as a reference for permutations or a key for a logical cipher within Llull's system of universal knowledge.
| b r | r d | d e | e f | e f | f g | f g | h |
| b r b | r d r | d e r | e f r | e f r | f g r | f g r | f |
| b r r | r d d | d e r | e f r | e f r | f g r | f g r | g |
| b r d | r d e | d e f | e f r | e f r | f g r | f g r | h |
| b d b | r e r | d f r | e g r | e g r | f h r | f h r | f |
| b d r | r e d | d f r | e g r | e g r | f h r | f h r | g |
| b d d | r e e | d f r | e g r | e g r | f h r | f h r | h |
| b r b r | r r r d | d r d e | e r e f | e r e f | f r f g | f r f g | f |
| b r b d | r r r e | d r d f | e r e g | e r e g | f r f h | f r f h | g |
| b r d d | r r d e | d r d f | e r d f | e r d f | f r d f | f r d f | h |
| r d b | d e r | e f r | f g r | f g r | g h r | g h r | f |
| r d r | d e d | e f r | f g r | f g r | g h r | g h r | g |
| r d d | d e e | e f r | f g r | f g r | g h r | g h r | h |
| r r b r | d r r d | e r d e | f r e f | f r e f | g r f g | g r f g | f |
| r r b d | d r r e | e r d f | f r e g | f r e g | g r f h | g r f h | g |
| r r d d | d r d e | e r e f | f r f g | f r f g | g r g h | g r g h | h |
| d r b r | e r r d | f r d e | g r e f | g r e f | h r f g | h r f g | f |
| d r b d | e r r e | f r d f | g r e g | g r e g | h r f h | h r f h | g |
| d r r d | e r d e | f r e f | g r f g | g r f g | h r g h | h r g h | h |
| r b r d | r r d e | r d e f | r e f g | r e f g | r f g h | r f g h |
The letters in this grid constitute a specialized alphabet (the "Alphabet of the Art"). In this system, each letter represents a philosophical principle: