B33113313132313113313223313331323331313331322331333132322331323133313232212131   >>    B3311331313231311331322331333132333131333132233133313232233132313331323221213   <<    B33113313132313113313223313331323331313331322331333132322331323133313232212133   >>      B33113313132313113313223313331323331313331322331333132322331323133313232212132   >>