The twelfth uni-literal hieroglyph is called r.
It is pronounced r, as in the Spanish word, pero, with one tap of the tongue against the roof of the mouth.
It depicts a mouth.
The transliteration is written r.
In Manuel de Codage, type a small r to represent the sign.
Refer to Study Tips, if necessary.
When you feel confident that you have memorized this sign, go on to the next hieroglyph: Lesson 4a - enclosure