B3311331313231311331322331333132313331322331323133313233211111133132231211   >>    B331133131323131133132233133313231333132233132313331323321111113313223121   <<    B3311331313231311331322331333132313331322331323133313233211111133132231213   >>      B3311331313231311331322331333132313331322331323133313233211111133132231212   >>