B3311331313231311331322331333132313331322121133133313331333133313332211211111   >>    B331133131323131133132233133313231333132212113313331333133313331333221121111   <<    B3311331313231311331322331333132313331322121133133313331333133313332211211113   >>      B3311331313231311331322331333132313331322121133133313331333133313332211211112   >>