bˌiːkˈeɪ,ˈælfək ʌv ɪkwˈɪvələns klˈæsᵻz ʌv dʒˈiːlˈeɪbəld sˈɛts sˈʌtʃ ðæt bˈiː wˈʌn, ..., bˌiːkˈeɪ ɑːɹ nˌɑːnˈɛmpti sˈʌbsɛts ʌv ˈɛs ðæt ɑːɹ pˈɛɹwaɪz dɪsdʒˈɔɪnt.
[Bk,αk]} of equivalence classes of G-labelled sets such that B1, ..., Bk are nonempty subsets of S that are pairwise disjoint.