B3311331313231311331322331333132233131133132233133313231333132313231323211   >>    B331133131323131133132233133313223313113313223313331323133313231323132321   <<    B3311331313231311331322331333132233131133132233133313231333132313231323213   >>      B3311331313231311331322331333132233131133132233133313231333132313231323212   >>