B3311331313231311331322331333132322132313223313231333132322123231   >>    B331133131323131133132233133313232213231322331323133313232212323   <<    B3311331313231311331322331333132322132313223313231333132322123233   >>      B3311331313231311331322331333132322132313223313231333132322123232   >>