B3313221211233132322331321123233313231333132233133313331323132313232231311   >>    B331322121123313232233132112323331323133313223313331333132313231323223131   <<    B3313221211233132322331321123233313231333132233133313331323132313232231313   >>      B3313221211233132322331321123233313231333132233133313331323132313232231312   >>