tcfail004.hs:3: Couldn't match the type
		    `PrelTup.(,)' against `PrelTup.(,,) taRU'
    Expected: `(taRO, taRR)'
    Inferred: `(taRU, taRX, taS0)'
    In a pattern binding: `(f, g) = (1, 2, 3)'


Compilation had errors