B3313221211233132322331321123233313231333132233133313331311211331311331123311   >>    B331322121123313232233132112323331323133313223313331333131121133131133112331   <<    B3313221211233132322331321123233313231333132233133313331311211331311331123313   >>      B3313221211233132322331321123233313231333132233133313331311211331311331123312   >>