ˈɔːl ɑːɹ nˌɛsɪsˈɛɹᵻli ʃˈeɪpt ˌɪntʊ pˈɑːlɪɡˌɑːnz wɪððə flˈoʊ ʌv wˈɔːɾɚ kˈɛɹfəli kəntɹˈoʊld ænd mˈɑːnɪɾɚd baɪ ðə wˈɜːkɚz.
All are necessarily shaped into polygons with the flow of water carefully controlled and monitored by the workers.