ˈɛn, ɐn ɐbɹˌiːvɪˈeɪʃən ʌv hˈɛn, ɹᵻfˈɜːz tə ðə lˈɑːɹdʒɚɹ ˈɛn klˈæs lˌoʊkəmˈoʊɾɪv, ænd tʃˈɪkɪn ɹᵻfˈɜːz tʊ ɪts ˌʌndɚpˈaʊɚd ˈɛm klˈæs ɐsˈɪstənt.
'En, an abbreviation of 'hen', refers to the larger N class locomotive, and chicken refers to its underpowered M class assistant.