D33211132313231333131333132233132213233313113313231323211232313221   >>    D3321113231323133313133313223313221323331311331323132321123231322   <<    D33211132313231333131333132233132213233313113313231323211232313223   >>      D33211132313231333131333132233132213233313113313231323211232313222   >>