Alternations between 2 and 1 are less predictable than alternations between quantities 3 and 2. This produced many lexical and grammatical alternations between stressed and unstressed syllables. Henri Maspero attributed some of these alternations to consonant clusters resulting from derivational affixes. Some morphophonological alternations occur depending on the final consonant or vowel. They are divided into vowel and consonant alternations. Forms throughout the inflectional paradigm usually exhibit morphophonemic alternations. As in the plural, morphophonological alternations occur depending on the final consonant or vowel. Suffixation is omnipresent, whereas morphological alternations play a secondary role. This produces a number of orthographic alternations in verbs whose pronunciation is entirely regular. These alternations are analogical with softening alternations, therefore they are mentioned here. These sound changes created the stress-triggered vowel alternations in the table below. There are some vowel alternations that don't have a clear rule or cause. They also occur in word roots together with vowel alternations (usually ||). The following table shows the vowel alternations in more detail. Latin has many examples of "word families" showing vowel alternations.