be - was/were - been [biː - wɒz/wɜː - biːn ]
become - became - become [bɪˈkʌm - bɪˈkeɪm - bɪˈkʌm ]
begin - began - begun [bɪˈgɪn - bɪˈgæn - bɪˈgʌn ]
bring - brought - brought [brɪŋ - brɔːt - brɔːt ]
build - built - built [bɪld - bɪlt - bɪlt ]
buy - bought - bought [baɪ - bɔːt - bɔːt ]
catch - caught - caught [kæʧ - kɔːt - kɔːt ]
choose - chose - chosen [ʧuːz - ʧəʊz - ˈʧəʊzn ]