B3311331313231311331322331333132333131333132233133313231333132222121   >>    B331133131323131133132233133313233313133313223313331323133313222212   <<    B3311331313231311331322331333132333131333132233133313231333132222123   >>      B3311331313231311331322331333132333131333132233133313231333132222122   >>