B33113313132313113313223313331323223313232313331333132313231221   >>    B3311331313231311331322331333132322331323231333133313231323122   <<    B33113313132313113313223313331323223313232313331333132313231223   >>      B33113313132313113313223313331323223313232313331333132313231222   >>