Sound l is written as either 𓈖 n or 𓂋 r, probably because the alphabet was created based on a dialect whose l was merged into n or r.

In hieratic script, 𓇌 j and 𓅱 w are usually abbreviated as 𓏭 and 𓏲 respectively.

𓇋 will be written if the j sound is at the beginning of a word, or it’s after a stressed vowel.

𓇌 will be written if the j sound is before a stressed vowel.

In Middle Egyptian, pronunciation of 𓊃 z became s, so that 𓋴 and 𓊃 can be used interchangeably. Pronunciation of 𓇋 became ʔ as well.

In Late Egyptian, not only 𓇋 j but also 𓏏 t, 𓂋 r, and 𓅱 w became pronounced as ʔ after a stressed vowel. 𓍿 c and 𓆓 ɟ were often merged into 𓏏 t and 𓂧 d respectively. 𓂧 d, 𓆓 ɟ, and 𓎼 g were gradually being merged into 𓏏 t, 𓍿 c, and 𓎡 k respectively.