B3311331313231311331322331333132313331322331323133313331323221211331321   >>    B331133131323131133132233133313231333132233132313331333132322121133132   <<    B3311331313231311331322331333132313331322331323133313331323221211331323   >>      B3311331313231311331322331333132313331322331323133313331323221211331322   >>