D33131112113313231333133313233313231333132333132322331322112121   >>    D3313111211331323133313331323331323133313233313232233132211212   <<    D33131112113313231333133313233313231333132333132322331322112123   >>      D33131112113313231333133313233313231333132333132322331322112122   >>