D112111123313223313112113313231133132333133313231333132322131221   >>    D11211112331322331311211331323113313233313331323133313232213122   <<    D112111123313223313112113313231133132333133313231333132322131223   >>      D112111123313223313112113313231133132333133313231333132322131222   >>