B33113313132313113313223313331323231323132313331333132322123221   >>    B3311331313231311331322331333132323132313231333133313232212322   <<    B33113313132313113313223313331323231323132313331333132322123223   >>      B33113313132313113313223313331323231323132313331333132322123222   >>