D112111123313223313112113313231133132333133313231333131323221211   >>    D11211112331322331311211331323113313233313331323133313132322121   <<    D112111123313223313112113313231133132333133313231333131323221213   >>      D112111123313223313112113313231133132333133313231333131323221212   >>