D23112313233313223313132322331323223313113313113132333132313221221   >>    D2311231323331322331313232233132322331311331311313233313231322122   <<    D23112313233313223313132322331323223313113313113132333132313221223   >>      D23112313233313223313132322331323223313113313113132333132313221222   >>