ðə ɹˈɪb pˈætɚnz ʌv sˈɑːndɚɡˌɑːɾɪk vˈɔlts ɑːɹ ᵻlˈæbɚɹˌeɪt ænd ˈɔfən kˈɜːvd ɪn plˈæn, sˈʌmtaɪmz jˈuːzɪŋ bɹˈoʊkən ænd flˈaɪɪŋ ɹˈɪbz fˈiːtʃɚz ɛkstɹˈiːmli ɹˈɛɹ ɪn ˈʌðɚ ɹˈiːdʒənz.
The rib patterns of Sondergotik vaults are elaborate and often curved (in plan), sometimes using broken and flying ribs (features extremely rare in other regions).