B33113313132313113313223313331323331321123233313231322132313221   >>    B3311331313231311331322331333132333132112323331323132213231322   <<    B33113313132313113313223313331323331321123233313231322132313223   >>      B33113313132313113313223313331323331321123233313231322132313222   >>