Assimilation
Assimilation/Harmony happens when children replace one consonant in a word with a consonant that appears somewhere else in that same word
Reduplication/Consonant Harmony: It is the reduplication of the syllable, while maintaining consonant harmony.
‘bottle’ /batəl/ -> [baba]
'dog' /dɒg/ -> [gɒg]
2. Nasal Harmony: A phenomenon in some languages where sounds produced in the nose affect the pronunciation of other sounds in the same word.
‘lamb’ /læm/ -> [næm]
'ten' /tɛn/ -> [nɛn]
3. Vowel Harmony: Vowels come to share certain features with contrastive vowels elsewhere in a word or phrase.
‘little’ /lɪtəl/-> [lɪdɪw]