十二 twelve[twelv]
十三 thirteen [θɜː'tiːn 'θɜːtiːn]
十四 fourteen [fɔː'tiːn 'fɔːtiːn]
十五 fifteen [fɪf'tiːn 'fɪftiːn]
十六 sixteen [sɪks'tiːn 'sɪkstiːn]
十七 seventeen [sev(ə)n'tiːn 'sev(ə)ntiːn]
十八 eighteen [eɪ'tiːn 'eɪtiːn]
十九 nineteen [naɪn'tiːn 'naɪntiːn]
二十 twenty ['twentɪ]。
