B3311331313231311331322331333132313331322121133133313231333131333132313222321   >>    B331133131323131133132233133313231333132212113313331323133313133313231322232   <<    B3311331313231311331322331333132313331322121133133313231333131333132313222323   >>      B3311331313231311331322331333132313331322121133133313231333131333132313222322   >>