Abugida
Some abugidas allow for consonant strings to be written down in a single consonant space. For example, in Khmer script, unlike in Thai script, consonants can be written on top of each other, with most consonants having normal and subscript forms. For example, the Khmer word phnom ភ្នំ as in Phnom Penh is written in one consonant space with three consonants, with ភ being ph, ្ន being the subscript form of ន n, and ំbeing the final -m to be pronounced after the vowel. Even though the word is written as phnm, the vowel o is the inherent vowel, thus it should be pronounced phnom. An example of a word with stacked consonants and a vowel is sri ស្រី, in which ស is s, ្រ is the subscript form of រ r, and ី being the vowel i.