The spelling of the two-word phrase "am common" is straightforward. "Am" is the first-person singular present tense form of the verb "be," indicating that the subject of the sentence is in the state of existence. Meanwhile, "common" is a simple adjective that describes something that is widespread or ordinary. In IPA phonetic transcription, "am" is spelled as /æm/ and "common" is spelled as /ˈkɑmən/. Together, they form a phrase that is pronounced as /æm ˈkɑmən/.