B3311331313231311331322331333132313331322331323133313331313132313223313221   >>    B331133131323131133132233133313231333132233132313331333131313231322331322   <<    B3311331313231311331322331333132313331322331323133313331313132313223313223   >>      B3311331313231311331322331333132313331322331323133313331313132313223313222   >>