It was originally E-shaped but only one side survives and the centre was completely redone in the early Victorian period.
ɪt wʌz ɚɹˈɪdʒɪnəli ˈiːʃˈeɪpt bˌʌt ˈoʊnli wˈʌn sˈaɪd sɚvˈaɪvz ænd ðə sˈɛntɚ wʌz kəmplˈiːtli ɹiːdˈʌn ɪnðɪ ˈɜːli vɪktˈoːɹiən pˈiəɹɪəd.