B33113313132313113313223313331323132313331313232233131133132221121   >>    B3311331313231311331322331333132313231333131323223313113313222112   <<    B33113313132313113313223313331323132313331313232233131133132221123   >>      B33113313132313113313223313331323132313331313232233131133132221122   >>