B3311331313231311331322331333132313331322331323133313331323321232321121   >>    B331133131323131133132233133313231333132233132313331333132332123232112   <<    B3311331313231311331322331333132313331322331323133313331323321232321123   >>      B3311331313231311331322331333132313331322331323133313331323321232321122   >>