D33211132313231333131333132233132213233313113313232233112113221   >>    D3321113231323133313133313223313221323331311331323223311211322   <<    D33211132313231333131333132233132213233313113313232233112113223   >>      D33211132313231333131333132233132213233313113313232233112113222   >>