B33113313132313113313223313331323132322223313231323223313113221   >>    B3311331313231311331322331333132313232222331323132322331311322   <<    B33113313132313113313223313331323132322223313231323223313113223   >>      B33113313132313113313223313331323132322223313231323223313113222   >>