Common typos: fnfvvnfvvffvvfnvvfnfcfnfvbfnfvffnfvgfnfvvdnfvvgnfvvrnfvvcnfvvvnfvvtnfvvfmfvvfbfvvfjfvvfhfvvfndvvfngvvfnrvvfncvvfnvvvfntvvfnfcvfnfbvfnffvfnfgfvnfvvnffvvffnvvfnvfcvfnfvvcfnfvbvfnfvvbfnfvfvfnfvvffnfvgvfnfvvgfnfvvdfnfvvfdnfvvfgnfvvrfnfvvfrnfvvfcnfvvvfnfvvfvnfvvtfnfvvftnfvvfmnfvvfnmfvvfbnfvvfnbfvvfjnfvvfnjfvvfhnfvvfnhfvvfndfvvfnfdvvfngfvvfnfgvvfnrfvvfnfrvvfncfvvfnfcvvfnvfvvfnfvvvfntfvvfnftvvfnfvcvfnfbvvfnfvbvfnffvvfnfvfvfnfvgvfnnfv