• a capital ‘l’ in a suffix means that the suffix follows the 4-way vowel harmony. e.g. +sIz (without, -less, as in sütsüz (milk-less, without milk, non-milky) can be siz, sız, suz, süz depending on the last vowel of the word it attaches.
• a capital ‘A’ in a suffix means that the suffix follows the 2-way vowel harmony. e.g. +lAr (the plural suffix) can be lar or ler depending on the last vowel of the word it attaches.
• a capital ‘D’ in a suffix means that the suffix follows consonant harmony. This only happens if the word it attaches to end in a consonant. The suffix consonant will be either ‘d’ or ‘t’ depending on the word-final consonant. If it is ‘p,ç,t,k,f,s,ç’ (mnemonic ‘Fıstıkçı Şahap’, Şahap the pistachio seller), then suffix will start with ‘t’, if not, then ‘d’. e.g kitap+ta vs. arabada, gitarda
• a capital ‘C’ in a suffix means consonant harmony. This only happens if the word it attaches to end in a consonant. The suffix consonant will be either ‘c’ or ‘ç’ depending on the word-final consonant. If it is ‘p,ç,t,k,f,s,ç’ (mnemonic ‘Fıstıkçı Şahap’, Şahap the pistachio seller), then suffix will start with ‘ç’, if not, then ‘c’.
  e.g. kitap+çı vs. arabacı, gitarcı