For example, after 6th century, German words starting with P, systematically shifted to a PF sound, while the Old English counterparts kept the P unchanged.
Mr Mugabe and his Zanu PF party are forging ahead without agreeing to any of the key security, media and electoral reforms demanded by regional mediators.
Among seemly power struggle is unfolding in Zimbabwe and the cracks are apearing in the governing ZANU-PF over who should succeed the 90 year old head of state.
The Zimbabwean President Robert Mugabe has accused elements of the ruling Zanu-PF Party of plotting to oust him. He told his party's conference that an attempt had been made to bribe delegates to depose him as leader.