Gapping is widely assumed to obligatorily elide a finite verb. Many verbs obligatorily classify an absolutive case. Most nouns in Ute obligatorily have suffixes. In contrast to Perl, variables are not obligatorily prefixed with a sigil. Segmental phonemes require obligatorily a single onset consonant. Another issue is that manner-of-speaking verbs are not always obligatorily transitive. The preceding verbs obligatorily take the active voice suffix. While many parasitic gaps occur optionally as just illustrated, other parasitic gaps occur obligatorily. Control is hence obligatorily present with these verbs. In Pakistan, executioners have obligatorily to be Christians. Thousands of species live in the indoor biome, many of them preferentially or even obligatorily. It is a common misconception that phototrophs are obligatorily photosynthetic. In the final position, all the obstruents are obligatorily released. When promotion is possible, then the promotion status is obligatorily notated. In many languages, such as English, number is obligatorily expressed in every grammatical context.