B231123233313231323132233133313233313232233132313231323233232111   >>    B23112323331323132313223313331323331323223313231323132323323211   <<    B231123233313231323132233133313233313232233132313231323233232113   >>      B231123233313231323132233133313233313232233132313231323233232112   >>