B3313221211233132322331321123233313231333132233133313331323132313223313223311   >>    B331322121123313232233132112323331323133313223313331333132313231322331322331   <<    B3313221211233132322331321123233313231333132233133313331323132313223313223313   >>      B3313221211233132322331321123233313231333132233133313331323132313223313223312   >>