Assimilation
sometimes a sound will change to become more like a nearby sound (e.g., baseball becomes bapeball). The nearby sound may actually be separated by one or more sounds from the one that changes (e.g., yellow becomes lellow). Assimilation can be anticipatory, where a sound changes to resemble a sound that follows it (dog becomes gog), or it can be perseveratory, where it sounds more like a one that has already occurred (dog becomes dod).