The follow-up tests may be "simple" pairwise comparisons of individual group means or may be "compound" comparisons (e.g., comparing the mean pooling across groups A, B and C to the mean of group D).
ðə fˈɑːloʊˌʌp tˈɛsts mˈeɪ bˈiː "sˈɪmpəl" pˈɛɹwaɪz kəmpˈæɹɪsənz ʌv ˌɪndᵻvˈɪdʒuːəl ɡɹˈuːp mˈiːnz ɔːɹ mˈeɪ bˈiː "kˈɑːmpaʊnd" kəmpˈæɹɪsənz ˈiː.dʒˈiː., kəmpˈɛɹɪŋ ðə mˈiːn pˈuːlɪŋ əkɹˌɑːs ɡɹˈuːps ˈeɪ, bˈiː ænd sˈiː tə ðə mˈiːn ʌv ɡɹˈuːp dˈiː.