B3311331313231311331322331333132313233313231333131211113313232321333132222321   >>    B331133131323131133132233133313231323331323133313121111331323232133313222232   <<    B3311331313231311331322331333132313233313231333131211113313232321333132222323   >>      B3311331313231311331322331333132313233313231333131211113313232321333132222322   >>