B3311331313231311331322331333132313331322331323133313233211111133233231   >>    B331133131323131133132233133313231333132233132313331323321111113323323   <<    B3311331313231311331322331333132313331322331323133313233211111133233233   >>      B3311331313231311331322331333132313331322331323133313233211111133233232   >>