Turkish obeys certain principles when it comes to suffixation. Most suffixes in Turkish will have more than one form, depending on the vowels and consonants in the root- vowel harmony rules will apply; consonant-initial suffixes will follow the voiced/ voiceless character of the consonant in the final unit of the root; and in the case of vowel-initial suffixes an additional consonant may be inserted if the root ends in a vowel, or the suffix may lose its initial vowel. There is also a prescribed order of affixation of suffixes- as a rule of thumb, derivative suffixes precede inflectional suffixes which are followed by clitics, as can be seen in the example set of words derived from a substantive root below: