B33113313132313113313223313331323133313223313231333133313232211233131323221221   >>    B3311331313231311331322331333132313331322331323133313331323221123313132322122   <<    B33113313132313113313223313331323133313223313231333133313232211233131323221223   >>      B33113313132313113313223313331323133313223313231333133313232211233131323221222   >>