B3311331313231311331322331333132233131133132233133313231333131121133112131   >>    B331133131323131133132233133313223313113313223313331323133313112113311213   <<    B3311331313231311331322331333132233131133132233133313231333131121133112133   >>      B3311331313231311331322331333132233131133132233133313231333131121133112132   >>