B331133131323131133132233133313232233131231133132313233313231323221221   >>    B33113313132313113313223313331323223313123113313231323331323132322122   <<    B331133131323131133132233133313232233131231133132313233313231323221223   >>      B331133131323131133132233133313232233131231133132313233313231323221222   >>