B331133131323131133132233133313231323133313132322331333132313231231212121   >>    B33113313132313113313223313331323132313331313232233133313231323123121212   <<    B331133131323131133132233133313231323133313132322331333132313231231212123   >>      B331133131323131133132233133313231323133313132322331333132313231231212122   >>