B3311331313231311331322331333132313331322331323133313331323131322133313221   >>    B331133131323131133132233133313231333132233132313331333132313132213331322   <<    B3311331313231311331322331333132313331322331323133313331323131322133313223   >>      B3311331313231311331322331333132313331322331323133313331323131322133313222   >>