B33113313132313113313223313331323133313223313231333133112113313232112312221   >>    B3311331313231311331322331333132313331322331323133313311211331323211231222   <<    B33113313132313113313223313331323133313223313231333133112113313232112312223   >>      B33113313132313113313223313331323133313223313231333133112113313232112312222   >>