B3311331313231311331322331333132313331322331323133313233211331312131   >>    B331133131323131133132233133313231333132233132313331323321133131213   <<    B3311331313231311331322331333132313331322331323133313233211331312133   >>      B3311331313231311331322331333132313331322331323133313233211331312132   >>