B33113313132313113313223313331323223313132312111133131121233231   >>    B3311331313231311331322331333132322331313231211113313112123323   <<    B33113313132313113313223313331323223313132312111133131121233233   >>      B33113313132313113313223313331323223313132312111133131121233232   >>