1. Question: Testbed generalships wizened Boffola trigraph mangleman

2. The only ambiguous trigraph is "BRN", which stands for Bahrain in IOC code and for Brunei in ISO code.

3. Brazilian Portuguese uses the trigraph ⟨tch⟩ /tʃ/ for loanwords; e.g., tchau, 'ciao', tcheco 'Czech', República Tcheca 'Czech Republic', tchê 'che' (this latter is regional), etc. European Portuguese normally replace the trigraph ⟨tch⟩ with ⟨ch⟩ /ʃ/: chau, checo, República Checa, etc. Both Spanish and Portuguese use ⟨zz⟩ /ts/ (never as /dz/ – this sequence appears only in loanwords from Japanese, e.g., adzuki) for some Italian loanwords, but in Portuguese may sometimes not be pronounced as affricate, but having an epenthetic /i/ or /ɨ/; e.g., Sp. and Port. pizza 'pizza', Sp. and Port. paparazzo 'paparazzo', etc. Spanish also utilizes ⟨tz⟩ /ts/ for Basque, Catalan and Nahuatl loanwords, and ⟨tl⟩ /tɬ/ (or /tl/) for Nahuatl loanwords; e.g., Ertzaintza, quetzal, xoloitzcuintle, Tlaxcala, etc. Portuguese utilizes ⟨ts⟩ for German, originarily ⟨z⟩, and Japanese loanwords.