D331212121133131333131323223313232233132313223313231323132211231   >>    D33121212113313133313132322331323223313231322331323132313221123   <<    D331212121133131333131323223313232233132313223313231323132211233   >>      D331212121133131333131323223313232233132313223313231323132211232   >>