For the purpose of dictionary ordering of words, main consonants, subscript consonants and dependent vowels are all significant; and when they appear in combination, they are considered in the order in which they would be spoken (main consonant, subscript, vowel). The order of the consonants and of the dependent vowels is the order in which they appear in the above tables. A syllable written without any dependent vowel is treated as if it contained a vowel character that precedes all the visible dependent vowels.