using build in braille keyboard on iphone french, spanish, russian and czech special characters

Hello everyone, I found out that one can use iphone build in keyboard to type braille characters, however, I can't get it working. For instance I know that ]in french ç are dots 1-2-3-4-6 or é dots 1-2-3-4-5-6, however, I don't know which braille keyboard to select, I tried 6 dots braille I tried contracted braille and I changed to french voice before typing, however, it did not seem to work out. Same thing can be said about spanish keyboard where for instance letter´ñ are dots 1-2-4-6. Same can be said for russian keyboard where letter shch are dots 1-3-4-6. Can some one give me detailed instructions for these languages as you guys know them? Many thanks.