B33113313132313113313223313331323132313331333133112111113223312121   >>    B3311331313231311331322331333132313231333133313311211111322331212   <<    B33113313132313113313223313331323132313331333133112111113223312123   >>      B33113313132313113313223313331323132313331333133112111113223312122   >>